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Valentinus (also spelled Valentinius;  – ) was the best known and, for a time, most successful
early Christian Early Christianity (up to the First Council of Nicaea in 325) spread from the Levant, across the Roman Empire, and beyond. Originally, this progression was closely connected to already established Jewish centers in the Holy Land and the Jewish d ...
Gnostic Gnosticism (from grc, γνωστικός, gnōstikós, , 'having knowledge') is a collection of religious ideas and systems which coalesced in the late 1st century AD among Jewish and early Christian sects. These various groups emphasized pe ...
theologian Theology is the systematic study of the nature of the divine and, more broadly, of religious belief. It is taught as an academic discipline, typically in universities and seminaries. It occupies itself with the unique content of analyzing the ...
. He founded his school in
Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus ( legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...
. According to
Tertullian Tertullian (; la, Quintus Septimius Florens Tertullianus; 155 AD – 220 AD) was a prolific early Christian author from Carthage in the Roman province of Africa. He was the first Christian author to produce an extensive corpus of ...
, Valentinus was a candidate for bishop but started his own group when another was chosen. Valentinus produced a variety of writings, but only fragments survive, largely those quoted in rebuttal arguments in the works of his opponents, not enough to reconstruct his system except in broad outline. His doctrine is known only in the developed and modified form given to it by his disciples, the Valentinians. He taught that there were three kinds of people, the spiritual, psychical, and material; and that only those of a spiritual nature received the ''
gnosis Gnosis is the common Greek noun for knowledge ( γνῶσις, ''gnōsis'', f.). The term was used among various Hellenistic religions and philosophies in the Greco-Roman world. It is best known for its implication within Gnosticism, where i ...
'' (knowledge) that allowed them to return to the divine
Pleroma Pleroma ( grc-koi, πλήρωμα, literally "fullness") generally refers to the totality of divine powers. It is used in Christian theological contexts, especially in Gnosticism. The term also appears in the Epistle to the Colossians, which is tr ...
, while those of a psychic nature (ordinary Christians) would attain a lesser or uncertain form of salvation, and that those of a material nature were doomed to perish. Valentinus had a large following, the Valentinians. It later divided into an Eastern and a Western, or Italian, branch. The
Marcosians The Marcosians were a Gnostic sect founded by Marcus, active in Lyon, France and southern Europe from the second to the 4th century. Women held special status in the Marcosian communities; they were regarded as prophetesses and participated in a ...
belonged to the Western branch.


Biography


Education

Epiphanius wrote () that he learned through word of mouth (although he acknowledged that it was a disputed point) that Valentinus was "born a Phrebonite" in the coastal region of Egypt, and received his Greek education in
Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandri ...
, an important and metropolitan early center of Christianity. The word "Phrebonite" is otherwise unknown, but probably refers to the ancient town of Phragonis, near present-day Tidah. In Alexandria, Valentinus may have heard the Gnostic philosopher
Basilides Basilides (Greek: Βασιλείδης) was an early Christian Gnostic religious teacher in Alexandria, Egypt who taught from 117 to 138 AD, notes that to prove that the heretical sects were "later than the catholic Church," Clement of Alexandr ...
and certainly became conversant with Hellenistic
Middle Platonism Middle Platonism is the modern name given to a stage in the development of Platonic philosophy, lasting from about 90 BC – when Antiochus of Ascalon rejected the scepticism of the new Academy – until the development of neoplatonis ...
and the culture of Hellenized Jews like the great Alexandrian Jewish allegorist and philosopher
Philo Philo of Alexandria (; grc, Φίλων, Phílōn; he, יְדִידְיָה, Yəḏīḏyāh (Jedediah); ), also called Philo Judaeus, was a Hellenistic Jewish philosopher who lived in Alexandria, in the Roman province of Egypt. Philo's de ...
.
Clement of Alexandria Titus Flavius Clemens, also known as Clement of Alexandria ( grc , Κλήμης ὁ Ἀλεξανδρεύς; – ), was a Christian theologian and philosopher who taught at the Catechetical School of Alexandria. Among his pupils were Origen an ...
records that his followers said that Valentinus was a follower of Theudas, and that Theudas in turn was a follower of
Paul the Apostle Paul; grc, Παῦλος, translit=Paulos; cop, ⲡⲁⲩⲗⲟⲥ; hbo, פאולוס השליח (previously called Saul of Tarsus;; ar, بولس الطرسوسي; grc, Σαῦλος Ταρσεύς, Saũlos Tarseús; tr, Tarsuslu Pavlus; ...
. Valentinus said that Theudas imparted to him the secret wisdom that Paul had taught privately to his inner circle, which Paul publicly referred to in connection with his visionary encounter with the risen Christ (
Romans 16 Romans 16 is the sixteenth (and the last) chapter of the Epistle to the Romans in the New Testament of the Christian Bible. It is authored by Paul the Apostle, while Paul was in Corinth in the mid 50s AD, with the help of a secretary (amanuensis) ...
:25;
1 Corinthians 2 1 Corinthians 2 is the second chapter of the First Epistle to the Corinthians in the New Testament of the Christian Bible. It is authored by Paul the Apostle and Sosthenes in Ephesus, composed between 52–55 CE. Text The original text was wr ...
:7;
2 Corinthians 12 2 Corinthians 12 is the twelfth chapter of the Second Epistle to the Corinthians in the New Testament of the Christian Bible. It is authored by Paul the Apostle and Timothy ( 2 Corinthians 1:1) in Macedonia in 55–56 CE. Text The original tex ...
:2–4;
Acts 9 Acts 9 is the ninth chapter of the Acts of the Apostles in the New Testament of the Christian Bible. It records Saul's conversion and the works of Saint Peter.Halley, Henry H. ''Halley's Bible Handbook'': an abbreviated Bible commentary. 23rd ed ...
:9–10), when he received the secret teaching from him. Such esoteric teachings were downplayed in Rome after the mid- 2nd century.


Teaching

Valentinus apparently taught first in
Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandri ...
and went to
Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus ( legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...
about 136, during the pontificate of Pope Hyginus, and remained until the pontificate of
Pope Anicetus Pope Anicetus was the bishop of Rome from c. 157 to his death in April 168.Campbell, Thomas (1907). "Pope St. Anicetus" in ''The Catholic Encyclopedia''. Vol. 1. New York: Robert Appleton Company. According to the ''Annuario Pontificio'', the sta ...
, dying probably about 180. The Christian heresiologists wrote details about the life of Valentinus, often scurrilous. I
''Adversus Valentinianos''
iv,
Tertullian Tertullian (; la, Quintus Septimius Florens Tertullianus; 155 AD – 220 AD) was a prolific early Christian author from Carthage in the Roman province of Africa. He was the first Christian author to produce an extensive corpus of ...
says Valentinus was a candidate for bishop, after which he turned to heresy in a fit of pique. He did this apparently along with
Marcion Marcion of Sinope (; grc, Μαρκίων ; ) was an early Christian theologian in early Christianity. Marcion preached that God had sent Jesus Christ who was an entirely new, alien god, distinct from the vengeful God of Israel who had created ...
, who was also active in Rome at the same time. Commonly unaccepted, we cannot know the accuracy of this statement, since it is delivered by his orthodox adversary and might not be other than a rhetorical insult.
Epiphanius of Salamis Epiphanius of Salamis ( grc-gre, Ἐπιφάνιος; c. 310–320 – 403) was the bishop of Salamis, Cyprus, at the end of the 4th century. He is considered a saint and a Church Father by both the Eastern Orthodox and Catholic Churches. He ga ...
wrote that Valentinus taught with piety in Rome, but gave up the true faith after he had suffered a
shipwreck A shipwreck is the wreckage of a ship that is located either beached on land or sunken to the bottom of a body of water. Shipwrecking may be intentional or unintentional. Angela Croome reported in January 1999 that there were approximatel ...
in
Cyprus Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is ge ...
and became insane. Epiphanius might have been influenced to believe this by the presence of Valentinian communities in Cyprus.


Valentinianism

''
Valentinianism Valentinianism was one of the major Gnostic Christian movements. Founded by Valentinus in the 2nd century AD, its influence spread widely, not just within Rome but also from Northwest Africa to Egypt through to Asia Minor and Syria in the East. ...
'' is the name for the school of gnostic philosophy tracing back to Valentinus. It was one of the major gnostic movements, having widespread following throughout the Roman Empire and provoking voluminous writings by Christian heresiologists. Notable Valentinians included
Heracleon Heracleon was a Gnostic who flourished about AD 175, probably in the south of Italy. He is described by Clement of Alexandria ('' Strom.'' iv. 9) as the most esteemed (δοκιμώτατος) of the school of Valentinus; and, according to Orige ...
,
Ptolemy Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importance ...
, Florinus, Marcus and Axionicus. Valentinus professed to have derived his ideas from Theodas or Theudas, a disciple of Paul. Valentinus drew freely on some books of the New Testament. Unlike a great number of other gnostic systems, which are expressly dualist, Valentinus developed a system that was more monistic, albeit expressed in dualistic terms. While Valentinus was alive he made many disciples, and his system was the most widely diffused of all the forms of Gnosticism, although, as Tertullian remarked, it developed into several different versions, not all of which acknowledged their dependence on him ("they affect to disavow their name"). Among the more prominent disciples of Valentinus were
Heracleon Heracleon was a Gnostic who flourished about AD 175, probably in the south of Italy. He is described by Clement of Alexandria ('' Strom.'' iv. 9) as the most esteemed (δοκιμώτατος) of the school of Valentinus; and, according to Orige ...
,
Ptolemy Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importance ...
, Marcus and possibly
Bardaisan Bardaisan (11 July 154 – 222 AD; syr, ܒܪ ܕܝܨܢ, ''Bardaiṣān''), known in Arabic as Ibn Daisan (ابن ديصان) and in Latin as Bardesanes, was a Syriac-speaking Assyrian or ParthianProds Oktor Skjaervo. ''Bardesanes''. Encyclopædi ...
. Many of the writings of these Gnostics, and a large number of excerpts from the writings of Valentinus, existed only in quotes displayed by their orthodox detractors, until 1945, when the cache of writings at
Nag Hammadi Nag Hammadi ( ; ar, نجع حمادى ) is a city in Upper Egypt. It is located on the west bank of the Nile in the Qena Governorate, about north-west of Luxor. It had a population of close to 43,000 . History The town of Nag Hammadi is nam ...
revealed a Coptic version of the ''
Gospel of Truth The Gospel of the Truth () is one of the Gnostic texts from the New Testament apocrypha found in the Nag Hammadi codices ("NHC"). It exists in two Coptic translations, a Subakhmimic rendition surviving almost in full in the first Nag Hammadi ...
,'' which is the title of a text that, according to
Irenaeus Irenaeus (; grc-gre, Εἰρηναῖος ''Eirēnaios''; c. 130 – c. 202 AD) was a Greek bishop noted for his role in guiding and expanding Christian communities in the southern regions of present-day France and, more widely, for the deve ...
, was the same as the ''Gospel of Valentinus'' mentioned by
Tertullian Tertullian (; la, Quintus Septimius Florens Tertullianus; 155 AD – 220 AD) was a prolific early Christian author from Carthage in the Roman province of Africa. He was the first Christian author to produce an extensive corpus of ...
in his ''Against All Heresies''.


Cosmology

Valentinian literature described the primal being, called '' Bythos'', as the beginning of all things. After ages of silence and contemplation, Bythos gave rise to other beings by a process of emanation. The first series of beings, the aeons, were thirty in number, representing fifteen syzygies or pairs sexually complementary. Through the error of Sophia, one of the lowest aeons, and the ignorance of Sakla, the lower world with its subjection to matter is brought into existence. Man, the highest being in the lower world, participates in both the psychic and the hylic (material) nature, and the work of redemption consists in freeing the higher, the spiritual, from its servitude to the lower. This was the word and mission of Jesus and the holy spirit. Valentinius' Christology may have posited the existence of three redeeming beings, but Jesus while on
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...
had a supernatural body which, for instance, "did not experience corruption" by defecating, according to Clement: there is also no mention of the account of Jesus's suffering in
First Epistle of Peter The First Epistle of Peter is a book of the New Testament. The author presents himself as Peter the Apostle. The ending of the letter includes a statement that implies that it was written from "Babylon", which is possibly a reference to Rome. T ...
, nor of any other, in any Valentinian text. The Valentinian system was comprehensive, and was worked out to cover all phases of thought and action. Valentinius was among the early Christians who attempted to align Christianity with
Platonism Platonism is the philosophy of Plato and philosophical systems closely derived from it, though contemporary platonists do not necessarily accept all of the doctrines of Plato. Platonism had a profound effect on Western thought. Platonism at l ...
, drawing dualist conceptions from the Platonic world of ideal forms (''
pleroma Pleroma ( grc-koi, πλήρωμα, literally "fullness") generally refers to the totality of divine powers. It is used in Christian theological contexts, especially in Gnosticism. The term also appears in the Epistle to the Colossians, which is tr ...
'') and the lower world of phenomena ('' kenoma''). Of the mid-2nd century thinkers and preachers who were declared heretical by Irenaeus and later mainstream Christians, only
Marcion of Sinope Marcion of Sinope (; grc, Μαρκίων ; ) was an early Christian theologian in early Christianity. Marcion preached that God had sent Jesus Christ who was an entirely new, alien god, distinct from the vengeful God of Israel who had created ...
is as outstanding as a personality. The contemporary orthodox counter to Valentinius was
Justin Martyr Justin Martyr ( el, Ἰουστῖνος ὁ μάρτυς, Ioustinos ho martys; c. AD 100 – c. AD 165), also known as Justin the Philosopher, was an early Christian apologist and philosopher. Most of his works are lost, but two apologies and ...
, though it was Irenaeus of Lyons who presented the most vigorous challenge to the Valentinians.


Trinity

Valentinus's name came up in the
Arian Arianism ( grc-x-koine, Ἀρειανισμός, ) is a Christological doctrine first attributed to Arius (), a Christian presbyter from Alexandria, Egypt. Arian theology holds that Jesus Christ is the Son of God, who was begotten by God ...
disputes in the fourth century when
Marcellus of Ancyra Marcellus may refer to: * Marcellus (name) * Marcus Claudius Marcellus, Roman commander Places * Marcellus, Lot-et-Garonne, France * Marcellus Township, Michigan ** Marcellus, Michigan, a village in Marcellus Township ** Marcellus Community S ...
, a staunch opponent of
Arianism Arianism ( grc-x-koine, Ἀρειανισμός, ) is a Christological doctrine first attributed to Arius (), a Christian presbyter from Alexandria, Egypt. Arian theology holds that Jesus Christ is the Son of God, who was begotten by God ...
, denounced the belief in God existing in three ''hypostases'' as heretical. Marcellus, who believed Father and Son to be one and the same, attacked his opponents by attempting to link them to Valentinus: In the fourth century,
Marcellus of Ancyra Marcellus may refer to: * Marcellus (name) * Marcus Claudius Marcellus, Roman commander Places * Marcellus, Lot-et-Garonne, France * Marcellus Township, Michigan ** Marcellus, Michigan, a village in Marcellus Township ** Marcellus Community S ...
declared that the idea of the Godhead existing as three hypostases (hidden spiritual realities) came from Plato through the teachings of Valentinus, who is quoted as teaching that God is three '' hypostases'' and three ''prosopa'' (persons) called the Father, the Son, and the Holy Spirit: While this accusation is often sourced in stating Valentinus believed in a Triune Godhead, there is in fact no corroborating evidence that Valentinus ever taught these things. Irenaeus makes no mention of this in any of his five books against heresies, even though he deals with Valentinianism extensively in them. Rather, he indicates that Valentinus believed in the pre-existent Aeon known as Proarche, Propator, and Bythus who existed alongside Ennœa, and they together begot Monogenes and Aletheia: and these constituted the first-begotten Pythagorean Tetrad, from whom thirty Aeons were produced. Likewise, in the work cited by Marcellus, the three natures are said to have been the three natures of man, concerning which Irenaeus writes: "They conceive, then, of three kinds of men, spiritual, material, and animal, represented by Cain, Abel, and Seth. These three natures are no longer found in one person, but constitute various kinds f men The material goes, as a matter of course, into corruption." According to Eusebius, Marcellus had a habit of mercilessly launching unsubstantiated attacks against his opponents, even those who had done him no wrong.


Valentinus' detractors

Shortly after Valentinus' death,
Irenaeus Irenaeus (; grc-gre, Εἰρηναῖος ''Eirēnaios''; c. 130 – c. 202 AD) was a Greek bishop noted for his role in guiding and expanding Christian communities in the southern regions of present-day France and, more widely, for the deve ...
began his massive work ''
On the Detection and Overthrow of the So-Called Gnosis ''Against Heresies'' (Ancient Greek: Ἔλεγχος καὶ ἀνατροπὴ τῆς ψευδωνύμου γνώσεως, ''Elenchos kai anatropē tēs pseudōnymou gnōseōs'', "On the Detection and Overthrow of the So-Called Gnosis"), some ...
'' (better known as ''Adversus Haereses'') with a highly negative portrayal of Valentinus and his teachings, which occupies most of his first book. A modern student, M. T. Riley, observes that Tertullian's ''Adversus Valentinianos'' retranslated some passages from Irenaeus, without adding original material. Later,
Epiphanius of Salamis Epiphanius of Salamis ( grc-gre, Ἐπιφάνιος; c. 310–320 – 403) was the bishop of Salamis, Cyprus, at the end of the 4th century. He is considered a saint and a Church Father by both the Eastern Orthodox and Catholic Churches. He ga ...
discussed and dismissed him (''Haer.'', XXXI). As with all the non-traditional early Christian writers, Valentinus has been known largely through quotations in the works of his detractors, though an Alexandrian follower also preserved some fragmentary sections as extended quotes. A Valentinian teacher
Ptolemy Claudius Ptolemy (; grc-gre, Πτολεμαῖος, ; la, Claudius Ptolemaeus; AD) was a mathematician, astronomer, astrologer, geographer, and music theorist, who wrote about a dozen scientific treatises, three of which were of importance ...
refers to "apostolic tradition which we too have received by succession" in his '' Letter to Flora''. Ptolemy is known only for this letter to a wealthy gnostic lady named Flora, a letter itself only known by its full inclusion in Epiphanius' ''Panarion''. The letter describes the gnostic doctrine about the laws of Moses and their relation to the
demiurge In the Platonic, Neopythagorean, Middle Platonic, and Neoplatonic schools of philosophy, the demiurge () is an artisan-like figure responsible for fashioning and maintaining the physical universe. The Gnostics adopted the term ''demiurge''. ...
. The possibility should not be ignored that the letter was composed by Epiphanius, in the manner of composed speeches that ancient historians put into the mouths of their protagonists, as a succinct way to sum up.


The ''Gospel of Truth''

A new field in Valentinian studies opened when the
Nag Hammadi library The Nag Hammadi library (also known as the " Chenoboskion Manuscripts" and the "Gnostic Gospels") is a collection of early Christian and Gnostic texts discovered near the Upper Egyptian town of Nag Hammadi in 1945. Thirteen leather-bound papyr ...
was discovered in Egypt in 1945. Among the varied collection of works classified as gnostic was a series of writings which could be associated with Valentinus, particularly the Coptic text called the ''
Gospel of Truth The Gospel of the Truth () is one of the Gnostic texts from the New Testament apocrypha found in the Nag Hammadi codices ("NHC"). It exists in two Coptic translations, a Subakhmimic rendition surviving almost in full in the first Nag Hammadi ...
'' which bears the same title reported by
Irenaeus Irenaeus (; grc-gre, Εἰρηναῖος ''Eirēnaios''; c. 130 – c. 202 AD) was a Greek bishop noted for his role in guiding and expanding Christian communities in the southern regions of present-day France and, more widely, for the deve ...
as belonging to a text by Valentinus. It is a declaration of the unknown name of Jesus's divine father, the possession of which enables the knower to penetrate the veil of ignorance that has separated all created beings from said father. It furthermore declares that Jesus has revealed that name through a variety of modes laden with a language of abstract elements. This unknown name of the Father, mentioned in the Gospel of Truth, turns out to be not so mysterious. It is in fact stated in the text: "The name of the Father is the Child." Indeed, the overarching theme of the text is the revelation of the oneness of Christian believers with the "Father" through the "Son", leading to a new experience of life characterized by the words "fullness" and "rest". The text's primary claim is that "since need came into being because the Father was not known, when the Father is known, from that moment on, need will no longer exist." The tone is mystical and the language symbolic, reminiscent of the tone and themes found in the canonical Gospel of John. There are also very striking linguistic similarities with the early Christian songs known as the Odes of Solomon. It notably lacks the unusual names for deities, emanations, or angels found in many other of the Nag Hammadi texts. Its accessibility has led to a newfound popularity, evidenced by inclusion in such devotional compilations as ''A New New Testament.''Hal Taussig, ed., A New New Testament: A Bible for the Twenty-first Century (Boston-New York: Houghton Mifflin Harcourt, 2013)


See also

*
List of Gospels A gospel (a contraction of Old English , meaning "good news/glad tidings", comparable to Greek , ) is a written account of the career and teachings of Jesus. The term originally meant the Christian message itself, but came to be used for the b ...


References


Citations


Sources

; Encyclopedias * ; Primary sources * The ancient primary sources for Valentinus are:
Irenaeus Irenaeus (; grc-gre, Εἰρηναῖος ''Eirēnaios''; c. 130 – c. 202 AD) was a Greek bishop noted for his role in guiding and expanding Christian communities in the southern regions of present-day France and, more widely, for the deve ...
, ''Against Heresies'' I.1 seq. and III.4;
Hippolytus of Rome Hippolytus of Rome (, ; c. 170 – c. 235 AD) was one of the most important second-third century Christian theologians, whose provenance, identity and corpus remain elusive to scholars and historians. Suggested communities include Rome, Palestin ...
, ''Philosophumena'', VI, 20–37;
Tertullian Tertullian (; la, Quintus Septimius Florens Tertullianus; 155 AD – 220 AD) was a prolific early Christian author from Carthage in the Roman province of Africa. He was the first Christian author to produce an extensive corpus of ...
, ''Adv. Valentin.''; Epiphanius, ''Panarion'', 31 (including the ''Letter to Flora'');
Theodoret Theodoret of Cyrus or Cyrrhus ( grc-gre, Θεοδώρητος Κύρρου; AD 393 –  458/466) was an influential theologian of the School of Antioch, biblical commentator, and Christian bishop of Cyrrhus (423–457). He played a piv ...
, ''Haer. Fab.'', I, 7. * The Valentinian Literature is translated in ; Modern scholarship * * * * * *


External links

*
''Valentinus and the Valentinian Tradition''
- an extremely comprehensive collection of material on Valentinian mythology, theology and tradition (from the Gnosis Archive website).

Introductory essay by Stephan A. Hoeller (from the Gnosis Archive website).

Complete collection of patristic sources mentioning Valentinus, including the works of Tertullian. Use the index search function to search the texts for specific references (again at the Gnosis Archive website).

Valentinus.

The Marcosians.

Valentinus, introductions and e-texts. {{DEFAULTSORT:Valentinus 100s births 160s deaths Gnostics 2nd-century Christianity 2nd-century Romans 2nd-century Christian theologians Year of birth uncertain Year of death uncertain