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medieval philosophy Medieval philosophy is the philosophy that existed through the Middle Ages, the period roughly extending from the fall of the Western Roman Empire in the 5th century until after the Renaissance in the 13th and 14th centuries. Medieval philosophy, ...
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A

* Abd al-Karīm ibn Hawāzin al-Qushayri *
Abhinavagupta Abhinavagupta (c. 950 – 1016 CE) was a philosopher, mystic and aesthetician from Kashmir. He was also considered an influential musician, poet, dramatist, exegete, theologian, and logicianRe-accessing Abhinavagupta, Navjivan Rastogi, ...
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Abner of Burgos Abner of Burgos (c. 1270 – c. 1347, or a little later) was a Jewish philosopher, a convert to Christianity and polemical writer against his former religion. Known after his conversion as Alfonso of Valladolid. Life As a student he acquired a ce ...
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Abraham bar Hiyya Abraham bar Ḥiyya ha-Nasi (; – 1136 or 1145), also known as Abraham Savasorda, Abraham Albargeloni, and Abraham Judaeus, was a Catalan Jewish mathematician, astronomer and philosopher who resided in Barcelona. Bar Ḥiyya was active in tra ...
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Abraham ibn Daud Abraham ibn Daud ( he, אַבְרָהָם בֵּן דָּוִד הַלֵּוִי אִבְּן דָּאוּד; ar, ابراهيم بن داود) was a Spanish-Jewish astronomer, historian, and philosopher; born at Córdoba, Spain about 1110; die ...
* Abū Hayyān al-Tawhīdī *
Abu Rayhan Biruni Abu Rayhan Muhammad ibn Ahmad al-Biruni (973 – after 1050) commonly known as al-Biruni, was a Khwarazmian Iranian in scholar and polymath during the Islamic Golden Age. He has been called variously the "founder of Indology", "Father of Co ...
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Abu Yaqub Sijistani Abu Ya'qub Ishaq ibn Ahmad al-Sijistani ( ar, أبو يعقوب إسحاق بن أحمد السجستاني) or al-Sijzi () was a 10th-century Persian Ismaili missionary active in the northern and eastern Iranian lands. His life is obscure, but ...
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Acharya Hemachandra Hemachandra was a 12th century () Indian Jain saint, scholar, poet, mathematician, philosopher, yogi, grammarian, law theorist, historian, lexicographer, rhetorician, logician, and prosodist. Noted as a prodigy by his contemporaries, he gain ...
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Active intellect The active intellect (Latin: ''intellectus agens''; also translated as agent intellect, active intelligence, active reason, or productive intellect) is a concept in classical and medieval philosophy. The term refers to the formal (''morphe'') aspe ...
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Actus et potentia In philosophy, potentiality and actuality are a pair of closely connected principles which Aristotle used to analyze motion, causality, ethics, and physiology in his ''Physics'', ''Metaphysics'', ''Nicomachean Ethics'', and ''De Anima''. The c ...
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Actus primus ''Actus primus'', or first actuality, is a technical expression used in scholastic philosophy. The Latin word ''actus'' means determination, complement. In every being there are many actualities, which are subordinated. Thus existence supposes ...
* Actus purus * Adalbertus Ranconis de Ericinio * Adam de Buckfield *
Adam de Wodeham Adam of Wodeham, OFM (1298–1358) was a philosopher and theologian. Currently, Wodeham is best known for having been a secretary of William Ockham and for his interpretations of John Duns Scotus. Despite this associational fame, Wodeham was an in ...
* Adam of Łowicz * Adam Parvipontanus * Adam Pulchrae Mulieris *
Adelard of Bath Adelard of Bath ( la, Adelardus Bathensis; 1080? 1142–1152?) was a 12th-century English natural philosopher. He is known both for his original works and for translating many important Arabic and Greek scientific works of astrology, astronom ...
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Adi Shankara Adi Shankara ("first Shankara," to distinguish him from other Shankaras)(8th cent. CE), also called Adi Shankaracharya ( sa, आदि शङ्कर, आदि शङ्कराचार्य, Ādi Śaṅkarācāryaḥ, lit=First Shanka ...
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Ahmad Sirhindi Aḥmad al-Fārūqī as-Sirhindī (1564-1624) was a South Asian Islamic scholar from Punjab, Hanafi jurist, and member of the Naqshbandī Sufi order. He has been described by some followers as a Mujaddid, meaning a “reviver", for his work i ...
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Al-Farabi Abu Nasr Muhammad Al-Farabi ( fa, ابونصر محمد فارابی), ( ar, أبو نصر محمد الفارابي), known in the West as Alpharabius; (c. 872 – between 14 December, 950 and 12 January, 951)PDF version was a renowned early Isl ...
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Al-Ghazali Al-Ghazali ( – 19 December 1111; ), full name (), and known in Persian-speaking countries as Imam Muhammad-i Ghazali (Persian: امام محمد غزالی) or in Medieval Europe by the Latinized as Algazelus or Algazel, was a Persian poly ...
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Al-Jahiz Abū ʿUthman ʿAmr ibn Baḥr al-Kinānī al-Baṣrī ( ar, أبو عثمان عمرو بن بحر الكناني البصري), commonly known as al-Jāḥiẓ ( ar, links=no, الجاحظ, ''The Bug Eyed'', born 776 – died December 868/Jan ...
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Al-Kindi Abū Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī (; ar, أبو يوسف يعقوب بن إسحاق الصبّاح الكندي; la, Alkindus; c. 801–873 AD) was an Arab Muslim philosopher, polymath, mathematician, physician ...
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Al-Shahrastani Tāj al-Dīn Abū al-Fath Muhammad ibn `Abd al-Karīm ash-Shahrastānī ( ar, تاج الدين أبو الفتح محمد بن عبد الكريم الشهرستاني; 1086–1153 CE), also known as Muhammad al-Shahrastānī, was an influenti ...
* Al Amiri * Alain de Lille *
Albert of Saxony (philosopher) Albert of Saxony ( Latin: ''Albertus de Saxonia''; c. 1320 – 8 July 1390) was a German philosopher and mathematician known for his contributions to logic and physics. He was bishop of Halberstadt from 1366 until his death. Life Albert was b ...
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Albertus Magnus Albertus Magnus (c. 1200 – 15 November 1280), also known as Saint Albert the Great or Albert of Cologne, was a German Dominican friar, philosopher, scientist, and bishop. Later canonised as a Catholic saint, he was known during his li ...
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Alcuin Alcuin of York (; la, Flaccus Albinus Alcuinus; 735 – 19 May 804) – also called Ealhwine, Alhwin, or Alchoin – was a scholar, clergyman, poet, and teacher from York, Northumbria. He was born around 735 and became the student o ...
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Alessandro Achillini Alessandro Achillini (''Latin'' Alexander Achillinus; 20 or 29 October 1463 (or possibly 1461)2 August 1512) was an Italian philosopher and physician. He is known for the anatomic studies that he was able to publish, made possible by a 13th-cent ...
* Alexander Bonini *
Alexander Neckam Alexander Neckam (8 September 115731 March 1217) was an English magnetician, poet, theologian, and writer. He was an abbot of Cirencester Abbey from 1213 until his death. Early life Born on 8 September 1157 in St Albans, Alexander shared his b ...
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Alexander of Hales Alexander of Hales (also Halensis, Alensis, Halesius, Alesius ; 21 August 1245), also called ''Doctor Irrefragibilis'' (by Pope Alexander IV in the ''Bull De Fontibus Paradisi'') and ''Theologorum Monarcha'', was a Franciscan friar, theologian a ...
* Alfred of Sareshel * Alhazen * Altheides *
Amalric of Bena Amalric of Bena (french: Amaury de Bène, Amaury de Chartres; la, Almaricus, Amalricus, Amauricus; died ) was a French theologian, philosopher and sect leader, after whom the Amalricians are named. Reformers such as Martin Luther considered him t ...
* André of Neufchâteau * Anselm of Canterbury *
Anselm of Laon Anselm of Laon ( la, Anselmus; 1117), properly Ansel ('), was a French theologian and founder of a school of scholars who helped to pioneer biblical hermeneutics. Biography Born of very humble parents at Laon before the middle of the 11th cent ...
* Antonio Beccadelli *
Arab transmission of the Classics to the West The transmission of the Greek Classics to Latin West, Latin Western Europe during the Middle Ages was a key factor in the Renaissance of the 12th century, development of intellectual life in Western Europe. ''Western Civilization: Ideas, Politi ...
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Athīr al-Dīn al-Abharī Athīr al‐Dīn al‐Mufaḍḍal ibn ʿUmar ibn al‐Mufaḍḍal al‐Samarqandī al‐Abharī, also known as Athīr al‐Dīn al‐Munajjim (d. in 1265 or 1262 Shabestar, Iran) was an Iranian muslim polymath, philosopher, astronomer, astrol ...
* Auctoritates Aristotelis *
Augustine Eriugena ''De mirabilibus Sacrae Scripturae'' (in English: ''On the miraculous things in Sacred Scripture'') is a Latin treatise written around 655 by an anonymous Irish writer and philosopher known as Augustinus Hibernicus or the Irish Augustine. The ...
* Augustine of Hippo *
Averroes Ibn Rushd ( ar, ; full name in ; 14 April 112611 December 1198), often Latinized as Averroes ( ), was an Andalusian polymath and jurist who wrote about many subjects, including philosophy, theology, medicine, astronomy, physics, psy ...
* Averroism * Avicenna *
Ayn al-Quzat Hamadani Ayn-al-Qużāt Hamadānī, also spelled Ain-al Quzat Hamedani or ʿAyn-al Qudat Hamadhani (1098–1131) ( fa, عین‌ القضات همدانی), full name: Abu’l-maʿālī ʿabdallāh Bin Abībakr Mohammad Mayānejī ( fa, ابوالمعال ...


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Barlaam of Seminara Barlaam of Seminara (Bernardo Massari, as a layman), c. 1290–1348, or Barlaam of Calabria ( gr, Βαρλαὰμ Καλαβρός) was an Eastern Orthodox Greek scholar born in southern Italy he was a scholar and clergyman of the 14th century, a ...
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Bartholomew of Bologna (philosopher) Bartholomew of Bologna (died c. 1294) was an Italian Franciscan scholastic philosopher. He was a follower of John Pecham. He studied at the University of Bologna, and then for a degree at the University of Paris. He preached in Paris in (what was ...
* Bartolommeo Spina *
Basilios Bessarion Bessarion ( el, Βησσαρίων; 2 January 1403 – 18 November 1472) was a Byzantine Greek Renaissance humanist, theologian, Catholic cardinal and one of the famed Greek scholars who contributed to the so-called great revival of letters ...
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Bernard of Chartres Bernard of Chartres ( la, Bernardus Carnotensis; died after 1124) was a twelfth-century French Neo-Platonist philosopher, scholar, and administrator. Life The date and place of his birth are unknown. He was believed to have been the elder bro ...
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Bernard of Clairvaux Bernard of Clairvaux, O. Cist. ( la, Bernardus Claraevallensis; 109020 August 1153), venerated as Saint Bernard, was an abbot, mystic, co-founder of the Knights Templars, and a major leader in the reformation of the Benedictine Order throug ...
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Bernard of Trilia Bernard of Trilia (Bernard de la Treille, Bernardus de Trilia) ( Nîmes, c. 1240 – 1292) was a French Dominican theologian and scholastic philosopher. He was an early supporter of the teaching of Thomas Aquinas Thomas Aquinas, OP (; it, T ...
* Bernard Silvestris * Berthold of Moosburg *
Boethius Anicius Manlius Severinus Boethius, commonly known as Boethius (; Latin: ''Boetius''; 480 – 524 AD), was a Roman senator, consul, ''magister officiorum'', historian, and philosopher of the Early Middle Ages. He was a central figure in the tr ...
* Boetius of Dacia *
Bonaventure Bonaventure ( ; it, Bonaventura ; la, Bonaventura de Balneoregio; 1221 – 15 July 1274), born Giovanni di Fidanza, was an Italian Catholic Franciscan, bishop, cardinal, scholastic theologian and philosopher. The seventh Minister G ...
* Brethren of Purity *
Brunetto Latini Brunetto Latini (who signed his name ''Burnectus Latinus'' in Latin and ''Burnecto Latino'' in Italian; –1294) was an Italian philosopher, scholar, notary, politician and statesman. Life Brunetto Latini was born in Florence in 1220 to a Tusc ...
* Byzantine philosophy *
Byzantine rhetoric Byzantine rhetoric refers to rhetorical theorizing and production during the time of the Byzantine Empire. Byzantine rhetoric is significant in part because of the sheer volume of rhetorical works produced during this period. Rhetoric was the most ...


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Cahal Daly Charles (Cahal) Brendan Cardinal Daly KGCHS (1 October 1917 – 31 December 2009) was an Irish philosopher, theologian, writer and international speaker and, in later years, a Cardinal of the Roman Catholic Church. Daly served as the Roman Cat ...
* Caigentan *
Cardinal virtues The cardinal virtues are four virtues of mind and character in both classical philosophy and Christian theology. They are prudence, justice, fortitude, and temperance. They form a virtue theory of ethics. The term ''cardinal'' comes from th ...
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Carolus Sigonius Carolus Sigonius (Carlo Sigonio or Sigone) (c. 152412 August 1584) was an Italian humanist, born in Modena. Biography Having studied Greek under the learned Franciscus Portus of Candia, he attended the philosophical schools of Bologna and ...
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Catherine of Siena Catherine of Siena (Italian: ''Caterina da Siena''; 25 March 1347 – 29 April 1380), a member of the Third Order of Saint Dominic, was a mystic, activist, and author who had a great influence on Italian literature and on the Catholic Church ...
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Celestial spheres The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus, and others. In these celestial models, the apparent motions of the fixed stars ...
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Cesare Cremonini (philosopher) Cesare Cremonini (; 22 December 1550 – 19 July 1631), sometimes Cesare Cremonino, was an Italian professor of natural philosophy, working rationalism (against revelation) and Aristotelian materialism (against the dualist immortality of the ...
* Choe Chung * Christine de Pizan *
Condemnations of 1210–1277 The Condemnations at the medieval University of Paris were enacted to restrict certain teachings as being heretical. These included a number of medieval theological teachings, but most importantly the physical treatises of Aristotle. The investi ...
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Consolation of Philosophy ''On the Consolation of Philosophy'' ('' la, De consolatione philosophiae'')'','' often titled as ''The Consolation of Philosophy'' or simply the ''Consolation,'' is a philosophical work by the Roman statesman Boethius. Written in 523 while he ...
* Constantine of Kostenets * Contra principia negantem disputari non potest * Convivio *
Cosmographia (Bernard Silvestris) ''Cosmographia'' ("Cosmography"), also known as ''De mundi universitate'' ("On the totality of the world"), is a Latin philosophical allegory, dealing with the creation of the universe, by the twelfth-century author Bernardus Silvestris. In for ...
* Credo ut intelligam *
Cristoforo Landino Cristoforo Landino (1424 in Pratovecchio, Casentino, Florence – 24 September 1498 in Borgo alla Collina, Casentino) was an Italian humanist and an important figure of the Florentine Renaissance. Biography From a family with ties to th ...


D

* Daniel of Morley *
Dante Alighieri Dante Alighieri (; – 14 September 1321), probably baptized Durante di Alighiero degli Alighieri and often referred to as Dante (, ), was an Italian poet, writer and philosopher. His ''Divine Comedy'', originally called (modern Italian: '' ...
* David ben Merwan al-Mukkamas * De divisione naturae *
Demetrius Chalcondyles Demetrios Chalkokondyles ( el, Δημήτριος Χαλκοκονδύλης ), Latinized as Demetrius Chalcocondyles and found variously as Demetricocondyles, Chalcocondylas or Chalcondyles (14239 January 1511) was one of the most eminent Gree ...
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Denis the Carthusian Denis the Carthusian (1402–1471), also known as Denys van Leeuwen, Denis Ryckel, Dionysius van Rijkel, Denys le Chartreux (or other combinations of these terms), was a Roman Catholic theologian and mystic. Life Denis was born in 1402 in that ...
* Divine apathy *
Doctrine of the Mean The ''Doctrine of the Mean'' or ''Zhongyong'' is one of the Four Books of classical Chinese philosophy and a central doctrine of Confucianism. The text is attributed to Zisi (Kong Ji), the only grandson of Confucius (Kong Zi). It was originall ...
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Dōgen Dōgen Zenji (道元禅師; 26 January 1200 – 22 September 1253), also known as Dōgen Kigen (道元希玄), Eihei Dōgen (永平道元), Kōso Jōyō Daishi (高祖承陽大師), or Busshō Dentō Kokushi (仏性伝東国師), was a J ...
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Dominicus Gundissalinus Dominicus Gundissalinus, also known as Domingo Gundisalvi or Gundisalvo ( 1115 – post 1190), was a philosopher and translator of Arabic to Medieval Latin active in Toledo. Among his translations, Gundissalinus worked on Avicenna's ''Liber de phil ...
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Duns Scotus John Duns Scotus ( – 8 November 1308), commonly called Duns Scotus ( ; ; "Duns the Scot"), was a Scottish Catholic priest and Franciscan friar, university professor, philosopher, and theologian. He is one of the four most important ...
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Dynamics of the celestial spheres Ancient, medieval and Renaissance astronomers and philosophers developed many different theories about the dynamics of the celestial spheres. They explained the motions of the various nested spheres in terms of the materials of which they wer ...


E

* Early Islamic philosophy * Elia del Medigo * Ethica thomistica * Étienne Tempier *
Eustratius of Nicaea Eustratius of Nicaea ( el, Εὐστράτιος; c. 1050/1060 – c. 1120)Donald J. Zeyl, Daniel Devereux, Phillip Mitsis, 1997, ''Encyclopedia of Classical Philosophy'', page 59. Greenwood Press was Metropolitan bishop of Nicaea in the early 12t ...
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Euthymius of Athos Euthymius the Athonite ( ka, ექვთიმე ათონელი ''Ekvtime Atoneli''; 955–1024) was a  Georgian monk, philosopher and scholar, who is venerated as a saint. His feast day in the Orthodox Church is May 13. Euthymius was ...
* Everard of Ypres


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* Fakhr al-Din al-Razi *
Federico Cesi Federico Angelo Cesi (; 26 February 1585 – 1 August 1630) was an Italian scientist, naturalist, and founder of the Accademia dei Lincei. On his father's death in 1630, he became briefly lord of Acquasparta. Biography Federico Cesi was ...
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Five wits In the time of William Shakespeare, there were commonly reckoned to be five wits and five senses. The five wits were sometimes taken to be synonymous with the five senses, but were otherwise also known and regarded as the five inward wits, ...
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Francesco Filelfo Francesco Filelfo ( la, Franciscus Philelphus; 25 July 1398 – 31 July 1481) was an Italian Renaissance humanist. Biography Filelfo was born at Tolentino, in the March of Ancona. He is believed to be a third cousin of Leonardo da Vinci. At th ...
* Francis of Marchia * Francis of Mayrone * Francis Robortello *
Francisco de Vitoria Francisco de Vitoria ( – 12 August 1546; also known as Francisco de Victoria) was a Spanish Roman Catholic philosopher, theologian, and jurist of Renaissance Spain. He is the founder of the tradition in philosophy known as the School of Sala ...
* Francisco Suárez * Franciscus Bonae Spei *
Fujiwara Seika was a Japanese Neo-Confucian philosopher and writer during the Edo period. His most well-known student was Hayashi Razan (1583–1657). Life He was born in Harima Province (now Miki City, Hyogo Prefecture) on February 8, 1561 to the Reize ...


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Gabriel Biel Gabriel Biel (; 1420 to 1425 – 7 December 1495) was a German scholastic philosopher and member of the Canons Regular of the Congregation of Windesheim, who were the clerical counterpart to the Brethren of the Common Life. Biel was born in Spe ...
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Galileo Galilei Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, sometimes described as a polymath. Commonly referred to as Galileo, his name was pronounced (, ). He wa ...
* Garlandus Compotista * Gasparinus de Bergamo *
Gaunilo of Marmoutiers Gaunilo or Gaunillon ( century) was a Benedictine monk of Marmoutier Abbey in Tours, France. He is best known for his contemporary criticism of the ontological argument for the existence of God which appeared in St Anselm's ''Proslogion''. ...
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Gemistus Pletho Georgios Gemistos Plethon ( el, Γεώργιος Γεμιστός Πλήθων; la, Georgius Gemistus Pletho /1360 – 1452/1454), commonly known as Gemistos Plethon, was a Greek scholar and one of the most renowned philosophers of the late By ...
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George of Trebizond George of Trebizond ( el, Γεώργιος Τραπεζούντιος; 1395–1486) was a Byzantine Greek philosopher, scholar, and humanist. Life He was born on the Greek island of Crete (then a Venetian colony known as the Kingdom of Candia), a ...
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Gerard of Abbeville Gerard of Abbeville (1220-1272) was a theologian from the University of Paris. He formally became a theologian in 1257 and from then was known as an opponent of the mendicant orders, particularly in the second stage of the conflict, taking part in ...
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Gerard of Bologna Gerard of Bologna (died 1317) was an Italian Carmelite theologian and scholastic philosopher. A convinced Thomist, he took a doctorate in theology in 1295 at the University of Paris , image_name = Coat of arms of the University of Paris.svg ...
* Gerard of Brussels *
Gerard of Cremona Gerard of Cremona (Latin: ''Gerardus Cremonensis''; c. 1114 – 1187) was an Italian translator of scientific books from Arabic into Latin. He worked in Toledo, Kingdom of Castile and obtained the Arabic books in the libraries at Toledo. Some of ...
* Gerardus Odonis *
Gersonides Levi ben Gershon (1288 – 20 April 1344), better known by his Graecized name as Gersonides, or by his Latinized name Magister Leo Hebraeus, or in Hebrew by the abbreviation of first letters as ''RaLBaG'', was a medieval French Jewish philosoph ...
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Gilbert de la Porrée Gilbert de la Porrée (after 1085 – 4 September 1154), also known as Gilbert of Poitiers, Gilbertus Porretanus or Pictaviensis, was a scholastic logician and theologian and Bishop of Poitiers. Life He was born in Poitiers, and completed ...
* Giles of Lessines *
Giles of Rome Giles of Rome O.S.A. (Latin: ''Aegidius Romanus''; Italian: ''Egidio Colonna''; c. 1243 – 22 December 1316), was a Medieval philosopher and Scholastic theologian and a friar of the Order of St Augustine, who was also appointed to the ...
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Giovanni Pico della Mirandola Giovanni Pico della Mirandola (24 February 1463 – 17 November 1494) was an Italian Renaissance nobleman and philosopher. He is famed for the events of 1486, when, at the age of 23, he proposed to defend 900 theses on religion, philosophy, ...
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Godfrey of Fontaines Godfrey of Fontaines (born sometime before 1250, died 29 October 1306 or 1309), in Latin Godefridus de Fontibus, was a scholastic philosopher and theologian, designated by the title Doctor Venerandus. He made contributions to a diverse range of sub ...
* Gonsalvus of Spain *
Great chain of being The great chain of being is a hierarchical structure of all matter and life, thought by medieval Christianity to have been decreed by God. The chain begins with God and descends through angels, humans, animals and plants to minerals. The great ...
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Gregor Reisch Gregor Reisch (c. 1467 - 9 May 1525) was a German Carthusian monk and humanist scholar. He is best known for his compilation ''Margarita Philosophica'', one of the earliest printed encyclopedias of general knowledge. Life Reisch was born at Balin ...
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Gregory of Rimini Gregory of Rimini (c. 1300 – November 1358), also called Gregorius de Arimino or Ariminensis, was one of the great scholastic philosophers and theologians of the Middle Ages. He was the first scholastic writer to unite the Oxonian and Parisia ...
* Grzegorz of Stawiszyn *
Guarino da Verona Guarino Veronese or Guarino da Verona (1374 – 14 December 1460) was an Italian classical scholar, humanist, and translator of ancient Greek texts during the Renaissance. In the republics of Florence and Venice he studied under Manuel Chrysol ...
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Guido Terrena Guido Terrena (c.1270 in Perpignan – 1342), also known as Guido Terreni and Guy de Perpignan, was a Catalan Carmelite canon lawyer and scholastic philosopher. Life He was a student of Godfrey of Fontaines, and teacher of John Baconthorpe. He ...
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Guillaume Pierre Godin Guillaume de Pierre Godin (Guilhem de Peyre Godin) (c. 1260 – 1336) was a French Dominican theologian, and Cardinal. Life Godin was born in Bayonne and spent his early years in south-west France.Alain Boureau, ''Satan the Heretic: The Nat ...
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Guru Nanak Dev Guru ( sa, गुरु, IAST: ''guru;'' Pali'': garu'') is a Sanskrit term for a "mentor, guide, expert, or master" of certain knowledge or field. In pan-Indian traditions, a guru is more than a teacher: traditionally, the guru is a reverential ...


H

* Haecceity *
Haribhadra Aacharya Haribhadra Suri was a Svetambara mendicant Jain leader, philosopher , doxographer, and author. There are multiple contradictory dates assigned to his birth. According to tradition, he lived c. 459–529 CE. However, in 1919, a Jain m ...
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Hayy ibn Yaqdhan ''Ḥayy ibn Yaqẓān'' () is an Arabic philosophical novel and an allegorical tale written by Ibn Tufail (c. 1105 – 1185) in the early 12th century in Al-Andalus. Names by which the book is also known include the ('The Self-Taught Philosop ...
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Henry Aristippus Henry Aristippus of Calabria (born in Santa Severina in 1105–10; died in Palermo in 1162), sometimes known as Enericus or Henricus Aristippus, was a religious scholar and the archdeacon of Catania (from c. 1155) and later chief ''familiaris'' of ...
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Henry Harclay Henry (of) Harclay ( la, Henricus Harcleius, also Harcla or Harcley; c. 1270 – 25 June 1317) was an English medieval philosopher and university chancellor. Biography Harclay was born in the Diocese of Carlisle near the English and Scottish bo ...
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Henry of Ghent Henry of Ghent (c. 1217 – 29 June 1293) was a scholastic philosopher, known as '' Doctor Solemnis'' (the "Solemn Doctor"), and also as Henricus de Gandavo and Henricus Gandavensis. Life Henry was born in the district of Mude, near Ghent. He ...
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Herman of Carinthia Herman of Carinthia (1105/1110 – after 1154), also called Hermanus Dalmata or Sclavus Dalmata, Secundus, by his own words born in the "heart of Istria", was a philosopher, astronomer, astrologer, mathematician and translator of Arabic works ...
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Hermannus Alemannus Hermannus Alemannus (Latin for Herman the German) translated Arabic philosophical works into Latin. He worked at the Toledo School of Translators around the middle of the thirteenth century (from approximately 1240 to 1256) and is almost certainly ...
* Hervaeus Natalis * Heymeric de Campo * Hibat Allah Abu'l-Barakat al-Baghdaadi *
Hisdosus Hisdosus (fl. c. 1100), also known as Hisdosus Scholasticus, was a writer and scholar who lived in the early 12th century. Nothing is known about his life. His first name is unknown, but he states that "I call myself Hisdosus, taken from the name of ...
* Hōnen * How many angels can dance on the head of a pin? *
Hugh of Saint Victor Hugh of Saint Victor ( 1096 – 11 February 1141), was a Saxon canon regular and a leading theologian and writer on mystical theology. Life As with many medieval figures, little is known about Hugh's early life. He was probably born in the 1090s. ...
* Hugh of St Cher *
Hylomorphism Hylomorphism (also hylemorphism) is a philosophical theory developed by Aristotle, which conceives every physical entity or being (''ousia'') as a compound of matter (potency) and immaterial form (act), with the generic form as immanently real ...


I

* Ibn al-Nafis *
Ibn al-Rawandi Abu al-Hasan Ahmad ibn Yahya ibn Ishaq al-Rawandi ( ar, أبو الحسن أحمد بن يحيى بن إسحاق الراوندي), commonly known as Ibn al-Rawandi ( ar, ابن الراوندي;‎ 827–911 CEAl-Zandaqa Wal Zanadiqa, by Moham ...
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Ibn Arabi Ibn ʿArabī ( ar, ابن عربي, ; full name: , ; 1165–1240), nicknamed al-Qushayrī (, ) and Sulṭān al-ʿĀrifīn (, , ' Sultan of the Knowers'), was an Arab Andalusian Muslim scholar, mystic, poet, and philosopher, extremely influen ...
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Ibn Bajjah Abū Bakr Muḥammad ibn Yaḥyà ibn aṣ-Ṣā’igh at-Tūjībī ibn Bājja ( ar, أبو بكر محمد بن يحيى بن الصائغ التجيبي بن باجة), best known by his Latinised name Avempace (;  – 1138), was an A ...
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Ibn Hazm Abū Muḥammad ʿAlī ibn Aḥmad ibn Saʿīd ibn Ḥazm ( ar, أبو محمد علي بن احمد بن سعيد بن حزم; also sometimes known as al-Andalusī aẓ-Ẓāhirī; 7 November 994 – 15 August 1064Ibn Hazm. ' (Preface). Tr ...
* Ibn Khaldun * Ibn Masarrah * Ibn Taymiyyah *
Ibn Tufail Ibn Ṭufail (full Arabic name: ; Latinized form: ''Abubacer Aben Tofail''; Anglicized form: ''Abubekar'' or ''Abu Jaafar Ebn Tophail''; c. 1105 – 1185) was an Arab Andalusian Muslim polymath: a writer, Islamic philosopher, Islamic the ...
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Immanuel the Roman Immanuel ben Solomon ben Jekuthiel of Rome (Immanuel of Rome, Immanuel Romano, Manoello Giudeo) (1261 in Rome – ca. 1335 in Fermo, Italy) was a Jewish poet and author who lived in present-day Italy and composed works in Hebrew and Italian. Imman ...
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Insolubilia In the Middle Ages, variations on the liar paradox were studied under the name of ''insolubilia'' ("insolubles"). Overview Although the liar paradox was well known in antiquity, interest seems to have lapsed until the twelfth century, when it ap ...
*
Intellectualism Intellectualism is the mental perspective that emphasizes the use, the development, and the exercise of the intellect; and also identifies the life of the mind of the intellectual person. (Definition) In the field of philosophy, the term ''inte ...
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Intelligible form An intelligible form in philosophy refers to a form that can be apprehended by the intellect. According to Ancient and Medieval philosophers, the intelligible forms are the things by which we understand. These are genera and species, insofar as ...
* Ioane Petritsi *
Ippen was a Japanese Buddhist itinerant preacher (''hijiri'') who founded the branch of Pure Land Buddhism. Life Ippen was born at Hōgon-ji, a temple in Iyo Province (modern Ehime Prefecture) on the island of Shikoku. He was originally named . He ...
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Isaac Abrabanel Isaac ben Judah Abarbanel ( he, יצחק בן יהודה אברבנאל;‎ 1437–1508), commonly referred to as Abarbanel (), also spelled Abravanel, Avravanel, or Abrabanel, was a Portuguese Jewish statesman, philosopher, Bible commentato ...
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Isaac Israeli ben Solomon Isaac Israeli ben Solomon (Hebrew: יצחק בן שלמה הישראלי, ''Yitzhak ben Shlomo ha-Yisraeli''; Arabic: أبو يعقوب إسحاق بن سليمان الإسرائيلي, ''Abu Ya'qub Ishaq ibn Suleiman al-Isra'ili'') ( 832 &ndas ...
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Isagoge The ''Isagoge'' ( el, Εἰσαγωγή, ''Eisagōgḗ''; ) or "Introduction" to Aristotle's "Categories", written by Porphyry in Greek and translated into Latin by Boethius, was the standard textbook on logic for at least a millennium after his ...
*
Isotta Nogarola Isotta Nogarola (1418–1466) was an Italian writer and intellectual who is said to be the first major female humanist and one of the most important humanists of the Italian Renaissance. She inspired generations of artists and writers, among them ...


J

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Jacob ben Nissim Jacob ben Nissim ibn Shahin was a Jewish philosopher and mathematician who lived at Kairouan, Tunisia in the 10th century; he was a younger contemporary of Saadia. At Jacob's request Sherira Gaon wrote a treatise entitled ''Iggeret,'' on the redac ...
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Jacopo Zabarella Giacomo (or Jacopo) Zabarella (5 September 1533 – 15 October 1589) was an Italian Aristotelian philosopher and logician. Life Zabarella was born into a noble Paduan family. He received a humanist education and entered the University of Padua ...
* Jakub of Gostynin * Jan Szylling *
Jayatirtha Sri Jayatirtha (), ''also known as'' Teekacharya () (1345 - 1388), was a Hindu philosopher, dialectician, polemicist and the sixth pontiff of Madhvacharya Peetha from (1365 – 1388). He is considered to be one of the most important seers in ...
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Jean Buridan Jean Buridan (; Latin: ''Johannes Buridanus''; – ) was an influential 14th-century French philosopher. Buridan was a teacher in the faculty of arts at the University of Paris for his entire career who focused in particular on logic and the wor ...
* Jean Capréolus *
Jedaiah ben Abraham Bedersi Jedaiah ben Abraham Bedersi (c. 1270 – c. 1340) ( he, ) was a Jewish poet, physician, and philosopher; born at Béziers (hence his surname Bedersi). His Occitan name was En Bonet, which probably corresponds to the Hebrew name Tobiah;compare ...
* Jien *
Jinul Jinul Puril Bojo Daesa (, "Bojo Jinul"; 1158–1210), often called Jinul or Chinul for short, was a Korean monk of the Goryeo period, who is considered to be the most influential figure in the formation of Korean Seon (Zen) Buddhism. He is credi ...
* Jiva Goswami * Jocelin of Soissons * Johannes Scotus Eriugena *
John Argyropoulos John Argyropoulos (/ˈd͡ʒɑn ˌɑɹd͡ʒɪˈɹɑ.pə.ləs/ el, Ἰωάννης Ἀργυρόπουλος ''Ioannis Argyropoulos''; it, Giovanni Argiropulo; surname also spelt ''Argyropulus'', or ''Argyropulos'', or ''Argyropulo''; c. 1415 – 2 ...
*
John Blund John Blund () was an English scholastic philosopher, known for his work on the nature of the soul, the Tractatus de anima, one of the first works of western philosophy to make use of the recently translated ''De Anima'' by Aristotle and especia ...
* John de Sècheville * John Dumbleton *
John Halgren of Abbeville John Halgren of Abbeville ( – 28 September 1237) was a French scholastic theologian and cleric. He served successively as a university professor, priest, prior, archbishop, cardinal, apostolic legate and diplomat. John was born around 1180 in Ab ...
* John Hennon *
John Italus John Italus or Italos ( el, , ''Iōánnēs ho Italós''; la, Johannes Italus) was a neoplatonic Byzantine philosopher of the eleventh century. He was Calabrian in origin, his father being a soldier. He came to Constantinople, where he became a ...
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John Major (philosopher) John Major (or Mair; also known in Latin as ''Joannes Majoris'' and ''Haddingtonus Scotus''; 1467–1550) was a Scottish philosopher, theologian, and historian who was much admired in his day and was an acknowledged influence on all the great ...
* John of Damascus * John of Głogów *
John of Jandun John of Jandun or John of Jaudun (French Jean de Jandun, Johannes von Jandun, or Johannes de Janduno, circa 1285–1328) was a French philosopher, theologian, and political writer. Jandun is best known for his outspoken defense of Aristotelia ...
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John of Mirecourt John of Mirecourt, also known as ''Monachus Albus'' ('the White Monk'), was a Cistercian scholastic philosopher of the fourteenth century, from Mirecourt, Lorraine. He was a follower of William of Ockham; he was censured by Pope Clement VI. Life a ...
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John of Paris John of Paris (in French language, French ''Jean de Paris''), also called Jean Quidort and Johannes de Soardis (c. 1255 – September 22, 1306), was a French Philosophy, philosopher, Theology, theologian, and Dominican Order, Dominican friar. L ...
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John of Salisbury John of Salisbury (late 1110s – 25 October 1180), who described himself as Johannes Parvus ("John the Little"), was an English author, philosopher, educationalist, diplomat and bishop of Chartres. Early life and education Born at Salisbury, E ...
* John of St. Thomas *
John Pagus John Pagus (; fl. first half of the 13th century) was a scholastic philosopher at the University of Paris, generally considered the first logician writing at the Arts faculty at Paris. Life He is thought to have been a Master of Arts in the 1220s a ...
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John Peckham John Peckham (c. 1230 – 8 December 1292) was Archbishop of Canterbury in the years 1279–1292. He was a native of Sussex who was educated at Lewes Priory and became a Friar Minor about 1250. He studied at the University of Paris under ...
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Joseph Albo Joseph Albo ( he, יוסף אלבו; c. 1380–1444) was a Jewish philosopher and rabbi who lived in Spain during the fifteenth century, known chiefly as the author of '' Sefer ha-Ikkarim'' ("Book of Principles"), the classic work on the fundament ...
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Joseph ben Judah of Ceuta Joseph ben Judah ( he, יוסף בן יהודה ''Yosef ben Yehuda'') of Ceuta ( 1160–1226) was a Jewish physician and poet, and disciple of Moses Maimonides. Maimonides wrote his work, the ''Guide for the Perplexed'' for Joseph. Life For th ...
* Judah ben Moses Romano *
Judah Halevi Judah Halevi (also Yehuda Halevi or ha-Levi; he, יהודה הלוי and Judah ben Shmuel Halevi ; ar, يهوذا اللاوي ''Yahuḏa al-Lāwī''; 1075 – 1141) was a Spanish Jewish physician, poet and philosopher. He was born in Spain, ...
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Julius Caesar Scaliger Julius Caesar Scaliger (; April 23, 1484 – October 21, 1558), or Giulio Cesare della Scala, was an Italian scholar and physician, who spent a major part of his career in France. He employed the techniques and discoveries of Renaissance humanism ...


K

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Kitabatake Chikafusa was a Japanese court noble and writer of the 14th century who supported the Southern Court in the Nanboku-cho period, serving as advisor to five Emperors. Some of his greatest and most famous work was performed during the reign of Emperor G ...
* Kwon Geun


L

* Lambert of Auxerre * Lambertus de Monte *
Leo the Mathematician Leo the Mathematician, the Grammarian or the Philosopher ( grc-gre, Λέων ὁ Μαθηματικός or ὁ Φιλόσοφος, ''Léōn ho Mathēmatikós'' or ''ho Philósophos''; – after January 9, 869) was a Byzantine philosopher and ...
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Leon Battista Alberti Leon Battista Alberti (; 14 February 1404 – 25 April 1472) was an Italian Renaissance humanist author, artist, architect, poet, priest, linguist, philosopher, and cryptographer; he epitomised the nature of those identified now as polymaths. H ...
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Leonardo da Vinci Leonardo di ser Piero da Vinci (15 April 14522 May 1519) was an Italian polymath of the High Renaissance who was active as a painter, Drawing, draughtsman, engineer, scientist, theorist, sculptor, and architect. While his fame initially res ...
* List of scholastic philosophers


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Madhusūdana Sarasvatī Madhusūdana Sarasvatī (c.1540–1640) was an Indian philosopher in the Advaita Vedānta tradition and devotee of Lord Krishna. He was the disciple of Viśveśvara Sarasvatī and Mādhava Sarasvatī, and is the most celebrated name in ...
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Madhvacharya Madhvacharya (; ; CE 1199-1278 or CE 1238–1317), sometimes anglicised as Madhva Acharya, and also known as Purna Prajna () and Ānanda Tīrtha, was an Indian philosopher, theologian and the chief proponent of the '' Dvaita'' (dualism) sch ...
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Maimonides Musa ibn Maimon (1138–1204), commonly known as Maimonides (); la, Moses Maimonides and also referred to by the acronym Rambam ( he, רמב״ם), was a Sephardic Jewish philosopher who became one of the most prolific and influential Tora ...
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Manuel Chrysoloras Manuel (or Emmanuel) Chrysoloras ( el, Μανουὴλ Χρυσολωρᾶς; c. 1350 – 15 April 1415) was a Byzantine Greek classical scholar, humanist, philosopher, professor, and translator of ancient Greek texts during the Renaissance. Se ...
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Marcus Musurus Marcus Musurus ( el, Μάρκος Μουσοῦρος ''Markos Mousouros''; it, Marco Musuro; c. 1470 – 1517) was a Greek scholar and philosopher born in Candia, Venetian Crete (modern Heraklion, Crete). Life The son of a rich merchant, Mus ...
* Marsilio Ficino *
Marsilius of Inghen Marsilius of Inghen (c. 1340 – 20 August 1396) was a medieval Dutch Scholastic philosopher who studied with Albert of Saxony and Nicole Oresme under Jean Buridan. He was Magister at the University of Paris as well as at the University of Hei ...
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Marsilius of Padua Marsilius of Padua (Italian: ''Marsilio'' or ''Marsiglio da Padova''; born ''Marsilio dei Mainardini'' or ''Marsilio Mainardini''; c. 1270 – c. 1342) was an Italian scholar, trained in medicine, who practiced a variety of professions. He ...
* Matheolus Perusinus *
Matthew of Aquasparta Matthew of Aquasparta ( it, Matteo di Aquasparta; 1240 – 29 October 1302) was an Italian Friar Minor and scholastic philosopher. He was elected Minister General of the Order. Life Born in Acquasparta, Umbria, he was a member of the Bentivenghi ...
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Medieval philosophy Medieval philosophy is the philosophy that existed through the Middle Ages, the period roughly extending from the fall of the Western Roman Empire in the 5th century until after the Renaissance in the 13th and 14th centuries. Medieval philosophy, ...
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Meister Eckhart Eckhart von Hochheim ( – ), commonly known as Meister Eckhart, Master Eckhart
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Michael of Massa Michael of Massa ( la, Michaelus Massensis; Michael Beccucci de Massa) (died 1337) was an Italian Augustinian Hermit and theologian. He is known both as a scholastic philosopher and as an author of contemplative works. He wrote a ''Sentences'' comm ...
* Michael Psellos * Michał Falkener *
Miskawayh Ibn Miskawayh ( fa, مُسْکُـوْيَه Muskūyah, 932–1030), full name Abū ʿAlī Aḥmad ibn Muḥammad ibn Yaʿqūb ibn Miskawayh was a Persian chancery official of the Buyid era, and philosopher and historian from Parandak, Iran. As ...
* Mohammad Ibn Abd-al-Haq Ibn Sab’in * Moralium dogma philosophorum *
Mu'ayyad fi'l-Din al-Shirazi Al-Mu'ayyad fid-din Abu Nasr Hibat Allah b. Abi 'Imran Musa b. Da'ud ash-Shirazi (c. 1000 CE/390 AH – 1078 CE/470 AH) was an 11th-century Isma'ili scholar, philosopher-poet, preacher and theologian of Persian origin. He served the Fatimid C ...
* Muhammad ibn Muhammad Tabrizi * Muhammad ibn Zakariya al-Razi *
Myōe (February 21, 1173 – February 11, 1232) was a Japanese Buddhist monk active during the Kamakura period who also went by the name ''Kōben'' ( ja, 高弁). He was a contemporary of Jōkei and Hōnen. Biography Myōe was born in what is n ...


N

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Nahmanides Moses ben Nachman ( he, מֹשֶׁה בֶּן־נָחְמָן ''Mōše ben-Nāḥmān'', "Moses son of Nachman"; 1194–1270), commonly known as Nachmanides (; el, Ναχμανίδης ''Nakhmanídēs''), and also referred to by the acronym Ra ...
* Nasir al-Din al-Tusi *
Nasir Khusraw Abu Mo’in Hamid ad-Din Nasir ibn Khusraw al-Qubadiani or Nāsir Khusraw Qubādiyānī Balkhi ( fa, ناصر خسرو قبادیانی, Nasir Khusraw Qubadiani) also spelled as ''Nasir Khusrow'' and ''Naser Khosrow'' (1004 – after 1070 CE) w ...
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Neo-medievalism Neo-medievalism (or neomedievalism, new medievalism) is a term with a long history that has acquired specific technical senses in two branches of scholarship. In political theory about modern international relations, where the term is originally ...
*
Niccolò Machiavelli Niccolò di Bernardo dei Machiavelli ( , , ; 3 May 1469 – 21 June 1527), occasionally rendered in English as Nicholas Machiavel ( , ; see below), was an Italian diplomat, author, philosopher and historian who lived during the Renaissance. ...
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Nichiren Nichiren (16 February 1222 – 13 October 1282) was a Japanese Buddhist priest and philosopher of the Kamakura period. Nichiren declared that the Lotus Sutra alone contains the highest truth of Buddhist teachings suited for the Third Age of ...
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Nicholas of Autrecourt Nicholas of Autrecourt ( French: ''Nicholas d'Autrécourt''; Latin: ''Nicolaus de Autricuria'' or ''Nicolaus de Ultricuria''; c. 1299, Autrecourt – 16 or 17 July 1369, Metz) was a French medieval philosopher and Scholastic theologian. Life a ...
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Nicholas of Kues Nicholas of Cusa (1401 – 11 August 1464), also referred to as Nicholas of Kues and Nicolaus Cusanus (), was a German Catholic cardinal, philosopher, theologian, jurist, mathematician, and astronomer. One of the first German proponents of Renai ...
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Nicole Oresme Nicole Oresme (; c. 1320–1325 – 11 July 1382), also known as Nicolas Oresme, Nicholas Oresme, or Nicolas d'Oresme, was a French philosopher of the later Middle Ages. He wrote influential works on economics, mathematics, physics, astrology an ...
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Nikephoros Choumnos Nikephoros Choumnos ( el, , 1250/55 – 1327) was a Byzantine scholar and official of the early Palaiologan period, one of the most important figures in the flowering of arts and letters of the so-called "Palaiologan Renaissance". He is notable ...


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Odo of Châteauroux Odo or Eudes of Châteauroux ( –25 January 1273), also known as and by many other names, was a French theologian and scholastic philosopher, papal legate and cardinal. He was “an experienced preacher and promoter of crusades”. Over 100 ...
* Omar Khayyám * Oxford Calculators * Oxford Franciscan school


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Palla Strozzi Palla di Onofrio Strozzi (1372 – 8 May 1462) was an Italian banker, politician, writer, philosopher and philologist. Biography He was born in Florence into the rich banking family of the Strozzi. He was educated by humanists, learning Greek ...
* Paolo da Pergola *
Passive intellect The passive intellect (Latin: ''intellectus possibilis''; also translated as potential intellect or material intellect), is a term used in philosophy alongside the notion of the active intellect in order to give an account of the operation of the i ...
* Patriarch Gennadios II of Constantinople *
Paul of Venice Paul of Venice (or Paulus Venetus; 1369–1429) was a Catholic philosopher, theologian, logician and metaphysician of the Order of Saint Augustine. Life Paul was born, according to the chroniclers of his order, at Udine, about 1369 and died at V ...
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Peripatetic axiom The Peripatetic axiom is: "Nothing is in the intellect that was not first in the senses" (Latin: "''Nihil est in intellectu quod non sit prius in sensu''"). It is found in Thomas Aquinas's ''De veritate, q. 2 a. 3 arg. 19''. Aquinas adopted this ...
* Peter Abelard * Peter Aureol * Peter Ceffons *
Peter Crockaert Peter Crockaert (c. 1465–1514), known as Peter of Brussels, was a Flemish scholastic philosopher. Initially he was a pupil of John Major (philosopher), John Mair and a follower of William of Ockham. Later he joined the Dominican Order, and became ...
* Peter de Rivo * Peter Helias *
Peter Lombard Peter Lombard (also Peter the Lombard, Pierre Lombard or Petrus Lombardus; 1096, Novara – 21/22 July 1160, Paris), was a scholastic theologian, Bishop of Paris, and author of '' Four Books of Sentences'' which became the standard textbook of ...
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Peter of Auvergne Peter of Auvergne (died 1304) was a French philosopher and theologian. Life He was a canon of Paris; some biographers have thought that he was Bishop of Clermont, because a Bull of Boniface VIII of the year 1296 names as canon of Paris a certain ...
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Peter of Capua the Elder Peter of Capua ( it, Pietro Capuano; la, Petrus Capuanus; died 30 August 1214) was an Italian scholastic theologian and prelate. He served as cardinal-deacon of Santa Maria in Via Lata from 1193 until 1201 and cardinal-priest of San Marcello al ...
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Peter of Corbeil Peter of Corbeil (died 3 June 1222), born at Corbeil, was a preacher and canon of Notre Dame de Paris, a scholastic philosopher and master of theology at the University of Paris, ca 1189. He is remembered largely because his aristocratic student ...
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Peter of Poitiers Peter of Poitiers (Latin: ''Petrus Pictaviensis'') was a French scholastic theologian, born at Poitiers or in its neighbourhood about 1130. He died in Paris, probably in 1215. Life He studied at the University of Paris, where he became profess ...
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Peter of Spain __NOTOC__ Peter of Hispania ( la, Petrus Hispanus; Portuguese and es, Pedro Hispano; century) was the author of the ', later known as the ', an important medieval university textbook on Aristotelian logic. As the Latin ''Hispania'' was consider ...
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Peter Olivi Peter John Olivi, also Pierre de Jean Olivi or Petrus Joannis Olivi (1248 – 14 March 1298), was a French Franciscan theologian and philosopher who, although he died professing the faith of the Roman Catholic Church, remained a controversial figure ...
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Petrarch Francesco Petrarca (; 20 July 1304 – 18/19 July 1374), commonly anglicized as Petrarch (), was a scholar and poet of early Renaissance Italy, and one of the earliest humanists. Petrarch's rediscovery of Cicero's letters is often credited ...
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Petrus Aureolus Petrus AureolusAlso known as: Petrus Aureoli, Peter Auriol, and Pierre Auriol; also Aureol, Aureole or Oriol. ( – 10 January 1322) was a scholastic philosopher and theologian. Little of his life before 1312 is known. After this time, he taugh ...
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Petrus Ramus Petrus Ramus (french: Pierre de La Ramée; Anglicized as Peter Ramus ; 1515 – 26 August 1572) was a French humanist, logician, and educational reformer. A Protestant convert, he was a victim of the St. Bartholomew's Day massacre. Early life ...
* Photios I of Constantinople *
Pierre d'Ailly Pierre d'Ailly (; Latin ''Petrus Aliacensis'', ''Petrus de Alliaco''; 13519 August 1420) was a French theologian, astrologer and cardinal of the Roman Catholic Church. Academic career D'Ailly was born in Compiègne in 1350 or 1351 of a prospero ...
* Pierre de Bar * Pietro Alcionio *
Pietro d'Abano Pietro d'Abano, also known as Petrus de Apono, Petrus Aponensis or Peter of Abano (Premuda, Loris. "Abano, Pietro D'." in '' Dictionary of Scientific Biography.'' (1970). New York: Charles Scribner's Sons. Vol. 1: p.4-5.1316), was an Italian philo ...
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Policraticus ''Policraticus'' is a work by John of Salisbury, written around 1159. Sometimes called the first complete medieval work of political theory, it belongs, at least in part, to the genre of advice literature addressed to rulers known as " mirrors for ...
* Porphyrian tree *
Praepositinus Praepositinus (Gilbert Prevostin of Cremona, Prevostinus Cremonensis) ( 1135 – 1210) was an Italian scholastic philosopher and theologian. He was a liturgical commentator, and supporter a ''res''-theory of belief. He discussed intentional contexts ...
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Primum movens The unmoved mover ( grc, ὃ οὐ κινούμενον κινεῖ, ho ou kinoúmenon kineî, that which moves without being moved) or prime mover ( la, primum movens) is a concept advanced by Aristotle as a primary cause (or first uncaused cau ...
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Problem of universals The problem of universals is an ancient question from metaphysics that has inspired a range of philosophical topics and disputes: Should the properties an object has in common with other objects, such as color and shape, be considered to exist be ...
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Proslogion The ''Proslogion'' () is a prayer (or meditation), written by the medieval cleric Saint Anselm of Canterbury in 1077–1078, serving to reflect on the attributes of God in order to explain how God can possess seemingly contradictory qualities. Thi ...


Q

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Qotb al-Din Shirazi Qotb al-Din Mahmoud b. Zia al-Din Mas'ud b. Mosleh Shirazi (1236–1311) ( fa, قطب‌الدین محمود بن ضیاالدین مسعود بن مصلح شیرازی) was a 13th-century Persian people, Persian polymath and Persian literatur ...
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Quiddity In scholastic philosophy, "quiddity" (; Latin: ''quidditas'') was another term for the essence of an object, literally its "whatness" or "what it is". Etymology The term "quiddity" derives from the Latin word ''quidditas'', which was used by the ...
* Quinque viae


R

* R. De Staningtona * Rabia al-Adawiyya * Radulfus Ardens *
Radulphus Brito Radulphus Brito (c. 1270 – 1320) was an influential grammarian and philosopher, based in Paris. He is usually identified as Raoul le Breton, though this is disputed by some.Confusion is possible since the contemporary (1316–1382) is also someti ...
* Ralph of Longchamp * Ralph Strode *
Ramanuja Ramanuja ( Middle Tamil: Rāmāṉujam; Classical Sanskrit: Rāmanuja; 1017 CE – 1137 CE; ; ), also known as Ramanujacharya, was an Indian Hindu philosopher, guru and a social reformer. He is noted to be one of the most important exponents ...
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Ramism Ramism was a collection of theories on rhetoric, logic, and pedagogy based on the teachings of Petrus Ramus, a French academic, philosopher, and Huguenot convert, who was murdered during the St. Bartholomew's Day massacre in August 1572. Accord ...
* Ramon Llull *
Remigius of Auxerre Remigius (Remi) of Auxerre ( la, Remigius Autissiodorensis; c. 841 – 908) was a Benedictine monk during the Carolingian period, a teacher of Latin grammar, and a prolific author of commentaries on classical Greek and Latin texts. He is also acc ...
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Renaissance The Renaissance ( , ) , from , with the same meanings. is a period in European history The history of Europe is traditionally divided into four time periods: prehistoric Europe (prior to about 800 BC), classical antiquity (800 BC to AD ...
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Renaissance humanism Renaissance humanism was a revival in the study of classical antiquity, at first in Italy and then spreading across Western Europe in the 14th, 15th, and 16th centuries. During the period, the term ''humanist'' ( it, umanista) referred to teache ...
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Renaissance philosophy The designation "Renaissance philosophy" is used by scholars of intellectual history to refer to the thought of the period running in Europe roughly between 1400 and 1600 (the dates shift forward for central and northern Europe and for areas such ...
* Richard Brinkley * Richard Kilvington * Richard of Campsall * Richard of Middleton *
Richard of Saint Victor Richard of Saint Victor (died 1173) was a Medieval Scottish philosopher and theologian and one of the most influential religious thinkers of his time. A canon regular, he was a prominent mystical theologian, and was prior of the famous Augustin ...
* Richard Rufus of Cornwall *
Richard Swineshead Richard Swineshead (also Suisset, Suiseth, etc.; fl. c. 1340 – 1354) was an English mathematician, logician, and natural philosopher. He was perhaps the greatest of the Oxford Calculators of Merton College, where he was a fellow certainly by 1344 ...
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Richard Wilton Richard Wilton (died 21 December 1239) was an English scholastic philosopher. Works His works included: *a commentary on the ''Sentences'' of Peter Lombard; *a treatise in five books against the heresies of his own age; *commentaries on the ''Boo ...
* Robert Alyngton * Robert Cowton *
Robert Grosseteste Robert Grosseteste, ', ', or ') or the gallicised Robert Grosstête ( ; la, Robertus Grossetesta or '). Also known as Robert of Lincoln ( la, Robertus Lincolniensis, ', &c.) or Rupert of Lincoln ( la, Rubertus Lincolniensis, &c.). ( ; la, Rob ...
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Robert Holcot Robert Holcot, OP (c. 1290 – 1349) was an English Dominican scholastic philosopher, theologian and influential Biblical scholar. Biography He was born in Holcot, Northamptonshire. A follower of William of Ockham, he was nicknamed the ''Doctor ...
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Robert Kilwardby Robert Kilwardby ( c. 1215 – 11 September 1279) was an Archbishop of Canterbury in England and a cardinal. Kilwardby was the first member of a mendicant order to attain a high ecclesiastical office in the English Church. Life Kilwardby s ...
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Robert of Melun Robert of Melun ( c. 1100 – 27 February 1167) was an English scholastic Christian theologian who taught in France, and later became Bishop of Hereford in England. He studied under Peter Abelard in Paris before teaching there and at Melun ...
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Robert Pullus Robert Pullen (surname also rendered as Polenius, Pullan, Pullein, Pullenus, Pullus, Pully, and La Poule) (c. 1080 – c. 1146) was an English theologian and official of the Roman Catholic Church, often considered to be one of the founders of Oxfo ...
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Rodolphus Agricola Rodolphus Agricola ( la, Rudolphus Agricola Phrisius; August 28, 1443, or February 17, 1444 – October 27, 1485) was a pre- Erasmian humanist of the Northern Low Countries, famous for his knowledge of Latin and Greek. He was an educator, music ...
* Roger Bacon *
Roland of Cremona Roland of Cremona (around 1178–1259) was a Dominican theologian and an early scholastic philosopher. He was the first Dominican regent master at Paris, France (1229–1230).''The Early Scholastics'', ''The Problem Of The Soul In The Thirteenth Ce ...
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Roscelin of Compiègne Roscelin of Compiègne (), better known by his Latinized name Roscellinus Compendiensis or Rucelinus, was a French philosopher and theologian, often regarded as the founder of nominalism. Biography Roscellinus was born in Compiègne, France. Lit ...
* Roscellinus *
Rota Fortunae In medieval and ancient philosophy the Wheel of Fortune, or ''Rota Fortunae'', is a symbol of the capricious nature of Fate. The wheel belongs to the goddess Fortuna (Greek equivalent Tyche) who spins it at random, changing the positions of ...


S

* Scholasticism *
School of Saint Victor The school of St Victor was the medieval monastic school at the Augustinian abbey of St Victor in Paris. The name also refers to the Victorines, the group of philosophers and mystics based at this school as part of the University of Paris. It ...
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Scotism Scotism is the philosophical school and theological system named after John Duns Scotus, a 13th-century Scottish philosopher-theologian. The word comes from the name of its originator, whose ''Opus Oxoniense'' was one of the most important ...
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Sensus communis ''Common Sense'' is a 47-page pamphlet written by Thomas Paine in 1775–1776 advocating independence from Great Britain to people in the Thirteen Colonies. Writing in clear and persuasive prose, Paine collected various moral and political arg ...
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Sentences ''The Four Books of Sentences'' (''Libri Quattuor Sententiarum'') is a book of theology written by Peter Lombard in the 12th century. It is a systematic compilation of theology, written around 1150; it derives its name from the '' sententiae'' ...
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Seosan Seosan () is a city in South Chungcheong Province, South Korea, with a population of roughly 175,000 according to the 2017 census. Located at the northwestern end of South Chungcheong Province, it is bounded by Dangjin City, Naepo New Town, Yes ...
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Shahab al-Din Suhrawardi "Shihāb ad-Dīn" Yahya ibn Habash Suhrawardī ( fa, شهاب‌الدین سهروردی, also known as Sohrevardi) (1154–1191) was a PersianEdward Craig, Routledge Encyclopedia of Philosophy, "al-Suhrawardi, Shihab al-Din Yahya (1154-91)" Ro ...
* Shinran *
Siger of Brabant Siger of Brabant (''Sigerus'', ''Sighier'', ''Sigieri'' or ''Sygerius de Brabantia''; c. 1240 – before 10 November 1284) was a 13th-century philosopher from the southern Low Countries who was an important proponent of Averroism. Life ...
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Simon of Faversham Simon of Faversham (also Simon Favershamensis, Simon de Faverisham, Simon von Faversham, or Simon Anglicus; c.1260–1306) was an England, English medieval scholastic philosopher and later a university Chancellor (university), chancellor. Simon of ...
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Simon of Tournai Simon of Tournai (c. 1130–1201) was a professor at the University of Paris in the late twelfth century. His date of birth is uncertain, but he was teaching before 1184, as he signed a document at the same time as Gerard de Pucelle, the Bishop of ...
* Solomon ibn Gabirol * Sophismata *
Sperone Speroni Sperone Speroni degli Alvarotti (1500–1588) was an Italian Renaissance humanist, scholar and dramatist. He was one of the central members of Padua's literary academy ''Accademia degli Infiammati'' and wrote on both moral and literary matters. ...
* Stephen of Alexandria * Substantial form * Sum of Logic * Summa *
Summa contra Gentiles The ''Summa contra Gentiles'' (also known as ', "Book on the truth of the Catholic faith against the errors of the unbelievers") is one of the best-known treatises by St Thomas Aquinas, written as four books between 1259 and 1265. Whereas the '' ...
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Summa Theologica The ''Summa Theologiae'' or ''Summa Theologica'' (), often referred to simply as the ''Summa'', is the best-known work of Thomas Aquinas (1225–1274), a scholastic theologian and Doctor of the Church. It is a compendium of all of the main th ...
* Summum bonum *
Supposition theory Supposition theory was a branch of medieval logic that was probably aimed at giving accounts of issues similar to modern accounts of reference, plurality, tense, and modality, within an Aristotelian context. Philosophers such as John Buridan, W ...
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Synderesis Synderesis () or synteresis, in scholastic moral philosophy, is the natural ''capacity'' or disposition (habitus) of the ''practical reason'' to apprehend intuitively the universal ''first principles'' of human ''action''. Reason is a single fac ...


T

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Temporal finitism Temporal finitism is the doctrine that time is finite in the past. The philosophy of Aristotle, expressed in such works as his ''Physics'', held that although space was finite, with only void existing beyond the outermost sphere of the heavens, ...
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Term logic In philosophy, term logic, also known as traditional logic, syllogistic logic or Aristotelian logic, is a loose name for an approach to formal logic that began with Aristotle and was developed further in ancient history mostly by his followers, ...
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Theodore Metochites Theodore Metochites ( el, Θεόδωρος Μετοχίτης; 1270–1332) was a Byzantine Greek statesman, author, gentleman philosopher, and patron of the arts. From c. 1305 to 1328 he held the position of personal adviser ('' mesazōn'') to e ...
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Thierry of Chartres Thierry of Chartres (''Theodoricus Chartrensis'') or Theodoric the Breton (''Theodericus Brito'') (died before 1155, probably 1150) was a twelfth-century philosopher working at Chartres and Paris, France. The cathedral school at Chartres promoted ...
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Thomas Aquinas Thomas Aquinas, OP (; it, Tommaso d'Aquino, lit=Thomas of Aquino; 1225 – 7 March 1274) was an Italian Dominican friar and priest who was an influential philosopher, theologian and jurist in the tradition of scholasticism; he is known wit ...
* Thomas Bradwardine *
Thomas Gallus Thomas Gallus of Vercelli (ca.1200 – 1246), sometimes in early twentieth century texts called Thomas of St Victor, Thomas of Vercelli or Thomas Vercellensis, was a French theologian, a member of the School of St Victor. He is known for his comm ...
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Thomas of Sutton Thomas of Sutton (died after 1315) was an English Dominican theologian, an early Thomist. He was ordained as deacon in 1274 by Walter Giffard, and joined the Dominicans in the 1270s; he may have been a Fellow of Merton College, Oxford before tha ...
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Thomas of Villanova Thomas of Villanova (1488 – September 8, 1555), born Tomás García y Martínez, was a Spanish friar of the Order of Saint Augustine who was a noted preacher, ascetic and religious writer of his day. He became an archbishop who was famous for ...
* Thomas of York (Franciscan) *
Thomas Wilton Thomas Wilton (active from 1288 to 1322) was an English theologian and scholastic philosopher, a pupil of Duns Scotus,Harjeet Singh Gill, ''Signification in language and culture'', Indian Institute of Advanced Study, 2002, p. 109. a teacher at the ...
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Thomism Thomism is the philosophical and theological school that arose as a legacy of the work and thought of Thomas Aquinas (1225–1274), the Dominican philosopher, theologian, and Doctor of the Church. In philosophy, Aquinas' disputed questions ...
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Thought of Thomas Aquinas Thomas Aquinas, Dominican Order, OP (; it, Tommaso d'Aquino, lit=Thomas of Aquino, Italy, Aquino; 1225 – 7 March 1274) was an Italian Dominican Order, Dominican friar and Catholic priest, priest who was an influential List of Catholic philo ...
* Timeline of Niccolò Machiavelli


U

* Ulrich of Strasburg *
University of Constantinople The Imperial University of Constantinople, sometimes known as the University of the Palace Hall of Magnaura ( el, Πανδιδακτήριον τῆς Μαγναύρας), was an Eastern Roman educational institution that could trace its corporat ...
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Univocity Univocity of being is the idea that words describing the properties of God mean the same thing as when they apply to people or things. It is associated with the doctrines of the Scholasticism, Scholastic theologian John Duns Scotus. Scotus In med ...
* Urso of Calabria


V

* Vācaspati Miśra *
Vijnanabhiksu Vijñānabhikṣu (also spelled ''Vijnanabhikshu'') was a Hindu philosopher from Bihar, variously dated to the 15th or 16th century, known for his commentary on various schools of Hindu philosophy, particularly the Yoga text of Patanjali. His scho ...
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Vincent Ferrer Vincent Ferrer, OP ( ca-valencia, Sant Vicent Ferrer , es, San Vicente Ferrer, it, San Vincenzo Ferreri, german: Sankt Vinzenz Ferrer, nl, Sint-Vincent Ferrer, french: Saint Vincent Ferrier; 23 January 1350 – 5 April 1419) was a Kingdom of V ...
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Vital du Four Vital du Four ( Bazas, 1260-Avignon, 1327) was a French Franciscan theologian and scholastic philosopher, and prior of Eauze. He became Cardinal in 1312 and bishop of Albano in 1321. Works * ''Quaestiones disputate de rerum principio'', wrongl ...
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Voluntarism (metaphysics) Voluntarism is "any metaphysical or psychological system that assigns to the will (Latin: ''voluntas'') a more predominant role than that attributed to the intellect",Voluntarism (theology)


W

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Walter Burley Walter Burley (or Burleigh; 1275 – 1344/45) was an English scholastic philosopher and logician with at least 50 works attributed to him. He studied under Thomas WiltonHarjeet Singh Gill, ''Signification in language and culture'', Indian Inst ...
* Walter Chatton * Walter of Bruges * Walter of Mortagne *
Walter of St Victor Walter of Saint Victor (d. c. 1180) was a mystic philosopher and theologian, and an Augustinian canon of Paris. Nothing is known about Walter except that, in about the year 1175, he was prior of St. Victor's Abbey, Paris; that about the time of th ...
* Walter of Winterburn *
Wang Yangming Wang Shouren (, 26 October 1472 – 9 January 1529), courtesy name Bo'an (), art name Yangmingzi (), usually referred to as Wang Yangming (), was a Chinese calligrapher, general, philosopher, politician, and writer during the Ming dynasty ...
* William Crathorn * William de la Mare *
William of Alnwick William of Alnwick (lat. Guillelmus Alaunovicanus, c. 1275 – March 1333) was a Franciscan friar and theologian, and bishop of Giovinazzo, who took his name from Alnwick in Northumberland. Little is known of his early life. By 1303 he was a li ...
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William of Auvergne (bishop) William of Auvergne (1180/90–1249) was a French theologian and philosopher who served as Bishop of Paris from 1228 until his death. He was one of the first western European philosophers to engage with and comment extensively upon Aristotelia ...
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William of Auxerre William of Auxerre (1140/50–1231) was a French scholastic theologian and official in the Roman Catholic Church. The teacher by whom William was most influenced was Praepositinus, or Prevostin, of Cremona, Chancellor of the University of Paris ...
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William of Champeaux Guillaume de Champeaux (18 January 1121 in Châlons-en-Champagne), known in English as William of Champeaux and Latinised to Gulielmus de Campellis, was a French philosopher and theologian. Biography William was born at Champeaux near Melun. ...
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William of Conches William of Conches (c. 1090/1091 – c. 1155/1170s) was a French scholastic philosopher who sought to expand the bounds of Christian humanism by studying secular works of the classics and fostering empirical science. He was a prominent member ...
* William of Falgar * William of Heytesbury * William of Lucca *
William of Moerbeke William of Moerbeke, O.P. ( nl, Willem van Moerbeke; la, Guillelmus de Morbeka; 1215–35 – 1286), was a prolific medieval translator of philosophical, medical, and scientific texts from Greek language into Latin, enabled by the period ...
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William of Ockham William of Ockham, OFM (; also Occam, from la, Gulielmus Occamus; 1287 – 10 April 1347) was an English Franciscan friar, scholastic philosopher, apologist, and Catholic theologian, who is believed to have been born in Ockham, a small vil ...
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William of Saint-Amour William of Saint-Amour was an early figure in thirteenth-century scholasticism, chiefly notable for his withering attacks on the friars. Biography William was born in Saint-Amour, Jura, then part of the Duchy of Burgundy, in c. 1200. Under the ...
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William of Sherwood William of Sherwood or William Sherwood (Latin: ''Guillielmus de Shireswode''; ), with numerous variant spellings, was a medieval English scholastic philosopher, logician, and teacher. Little is known of his life, but he is thought to have studied ...
* William of Ware *
Works by Thomas Aquinas The collected works of Thomas Aquinas are being edited in the ''Editio Leonina'' (established 1879). As of 2014, 39 out of a projected 50 volumes have been published. The works of Aquinas can be grouped into six categories as follows: #Works wr ...


Y

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Yi Hwang Yi Hwang (January 3, 1502– January 3, 1571) was the most important Korean philosopher, writer, and Confucian scholar of the Joseon Dynasty. He was a figure of the Neo-Confucian literati, established the Yeongnam School and set up the Dosan S ...
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Yohanan Alemanno Yohanan Alemanno (born in Constantinople or in Mantua, c. 1435 – died after 1504) was an Italian Jewish rabbi, noted Kabbalist, humanist philosopher, and exegete, and teacher of the Hebrew language to Italian humanists including Pico della M ...


Z

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Zhang Zai Zhang Zai () (1020–1077) was a Chinese philosopher and politician. He is most known for laying out four ontological goals for intellectuals: to build up the manifestations of Heaven and Earth's spirit, to build up good life for the populace, to ...
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Zhu Xi Zhu Xi (; ; October 18, 1130 – April 23, 1200), formerly romanized Chu Hsi, was a Chinese calligrapher, historian, philosopher, poet, and politician during the Song dynasty. Zhu was influential in the development of Neo-Confucianism. He con ...
Medieval In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...
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