Epicureanism is a system of

philosophy Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...

founded 307 BCE based upon the teachings of

Epicurus Epicurus (, ; ; 341–270 BC) was an Greek philosophy, ancient Greek philosopher who founded Epicureanism, a highly influential school of philosophy that asserted that philosophy's purpose is to attain as well as to help others attain tranqui ...

, an

ancient Greek philosopher Ancient Greek philosophy arose in the 6th century BC. Philosophy was used to make sense of the world using reason. It dealt with a wide variety of subjects, including astronomy, epistemology, mathematics, political philosophy, ethics, metaphysics ...

. Epicurus was an

atomist Atomism () is a natural philosophy proposing that the physical universe is composed of fundamental indivisible components known as atoms. References to the concept of atomism and its atoms appeared in both ancient Greek and ancient Indian philo ...

and

materialist Materialism is a form of philosophical monism according to which matter is the fundamental substance in nature, and all things, including mental states and consciousness, are results of material interactions. According to philosophical materia ...

, following in the steps of

Democritus Democritus (, ; , ''Dēmókritos'', meaning "chosen of the people"; – ) was an Ancient Greece, Ancient Greek Pre-Socratic philosophy, pre-Socratic philosopher from Abdera, Thrace, Abdera, primarily remembered today for his formulation of an ...

. His materialism led him to

religious skepticism Religious skepticism is a type of skepticism relating to religion. Religious skeptics question religious authority and are not necessarily antireligious/clerical but rather are skeptical of either specific or all religious beliefs and/or practi ...

and a general attack on superstition and divine intervention. Epicureanism was originally a challenge to

Platonism Platonism is the philosophy of Plato and philosophical systems closely derived from it, though contemporary Platonists do not necessarily accept all doctrines of Plato. Platonism has had a profound effect on Western thought. At the most fundam ...

, and its main opponent later became

Stoicism Stoicism is a school of Hellenistic philosophy that flourished in ancient Greece and Rome. The Stoics believed that the universe operated according to reason, ''i.e.'' by a God which is immersed in nature itself. Of all the schools of ancient ...

. It is a form of

hedonism Hedonism is a family of Philosophy, philosophical views that prioritize pleasure. Psychological hedonism is the theory that all human behavior is Motivation, motivated by the desire to maximize pleasure and minimize pain. As a form of Psycholo ...

insofar as it declares pleasure to be its sole intrinsic goal. However, the concept that the absence of pain and fear constitutes the greatest pleasure, and its advocacy of a simple life, make it very different from hedonism as

colloquially Colloquialism (also called ''colloquial language'', ''colloquial speech'', ''everyday language'', or ''general parlance'') is the linguistic style used for casual and informal communication. It is the most common form of speech in conversation am ...

understood. Following the

Cyrenaic The Cyrenaics or Kyrenaics (), were a sensual hedonist Greek school of philosophy founded in the 4th century Common Era, BCE, supposedly by Aristippus of Cyrene, although many of the principles of the school are believed to have been formalized b ...

philosopher

Aristippus Aristippus of Cyrene (; ; c. 435 – c. 356 BCE) was a hedonistic Greek philosopher and the founder of the Cyrenaic school of philosophy. He was a pupil of Socrates, but adopted a different philosophical outlook, teaching that the goal of life ...

, Epicurus believed that the greatest good was to seek modest, sustainable pleasure in the form of a state of ''

ataraxia In Ancient Greek philosophy, ( Greek: , from indicating negation or absence and with the abstract noun suffix ), generally translated as , , , or , is a lucid state of robust equanimity characterized by ongoing freedom from distress and wo ...

'' (tranquility and freedom from fear) and ''aponia'' (the absence of bodily pain) through knowledge of the workings of the world and limiting desires. Correspondingly, Epicurus and his followers generally withdrew from politics because it could lead to frustrations and ambitions that would conflict with their pursuit of virtue and peace of mind. Few writings by Epicurus have survived.

Diogenes Laertius Diogenes Laërtius ( ; , ; ) was a biographer of the Greek philosophers. Little is definitively known about his life, but his surviving book ''Lives and Opinions of Eminent Philosophers'' is a principal source for the history of ancient Greek phi ...

has preserved three instructional letters attributed to Epicurus, as well as a list of the

Principal Doctrines Epicurus (, ; ; 341–270 BC) was an Greek philosophy, ancient Greek philosopher who founded Epicureanism, a highly influential school of philosophy that asserted that philosophy's purpose is to attain as well as to help others attain tranqui ...

of Epicureanism. The letters to

Herodotus Herodotus (; BC) was a Greek historian and geographer from the Greek city of Halicarnassus (now Bodrum, Turkey), under Persian control in the 5th century BC, and a later citizen of Thurii in modern Calabria, Italy. He wrote the '' Histori ...

and to Menoeceus are generally accepted as authentic works written by Epicurus himself. However, the letter addressed to Pythocles is often considered to be a compilation by one of his students, likely based on Epicurus’ original writings. There are also independent attestations of his ideas from his later disciples. The epic poem ''

De rerum natura (; ''On the Nature of Things'') is a first-century BC Didacticism, didactic poem by the Roman Republic, Roman poet and philosopher Lucretius () with the goal of explaining Epicureanism, Epicurean philosophy to a Roman audience. The poem, writte ...

'' (Latin for "On the Nature of Things") by

Lucretius Titus Lucretius Carus ( ; ; – October 15, 55 BC) was a Roman poet and philosopher. His only known work is the philosophical poem '' De rerum natura'', a didactic work about the tenets and philosophy of Epicureanism, which usually is t ...

presents the core arguments and theories of Epicureanism in one unified work. Many Epicurean texts have also been found on scrolls unearthed at the

Villa of the Papyri The Villa of the Papyri (, also known as ''Villa dei Pisoni'' and in early excavation records as the ''Villa Suburbana'') was an ancient Roman Empire, Roman villa in Herculaneum, in what is now Ercolano, southern Italy. It is named after its un ...

Herculaneum Herculaneum is an ancient Rome, ancient Roman town located in the modern-day ''comune'' of Ercolano, Campania, Italy. Herculaneum was buried under a massive pyroclastic flow in the eruption of Mount Vesuvius in 79 AD. Like the nearby city of ...

, mostly works written by the Epicurean philosopher

Philodemus Philodemus of Gadara (, ''Philodēmos'', "love of the people"; – prob. or 35 BC) was an Epicurean philosopher and poet. He studied under Zeno of Sidon in Athens, before moving to Rome, and then to Herculaneum. He was once known chiefly for h ...

or his teacher

Zeno of Sidon Zeno of Sidon (; c. 150 – c. 75 BC) was a Greek Epicurean philosopher from the Seleucid city of Sidon. His writings have not survived, but there are some epitomes of his lectures preserved among the writings of his pupil Philodemus. Life Z ...

along with fragments of works by Epicurus himself.

Diogenes of Oenoanda Diogenes of Oenoanda (; ) was an Epicurean Greek from the 2nd century AD who carved a summary of the philosophy of Epicurus onto a portico wall in the ancient Greek city of Oenoanda in Lycia (modern day southwest Turkey). The surviving fragments ...

, a wealthy Epicurean in the 2nd century CE, had a portico wall inscribed with tenets of the philosophy erected in

Oenoanda Oenoanda (; ''Oinoanda'') was a Lycian city, in the upper valley of the River Xanthus. It is noted for the philosophical inscription by the Epicurean, Diogenes of Oenoanda. The ruins of the city lie on a highly isolated site west of the mo ...

Lycia Lycia (; Lycian: 𐊗𐊕𐊐𐊎𐊆𐊖 ''Trm̃mis''; , ; ) was a historical region in Anatolia from 15–14th centuries BC (as Lukka) to 546 BC. It bordered the Mediterranean Sea in what is today the provinces of Antalya and Muğ ...

(present day Turkey). Epicureanism flourished in the Late

Hellenistic period In classical antiquity, the Hellenistic period covers the time in Greek history after Classical Greece, between the death of Alexander the Great in 323 BC and the death of Cleopatra VII in 30 BC, which was followed by the ascendancy of the R ...

and during the Roman era, and many Epicurean communities were established in places such as

Antioch Antioch on the Orontes (; , ) "Antioch on Daphne"; or "Antioch the Great"; ; ; ; ; ; ; . was a Hellenistic Greek city founded by Seleucus I Nicator in 300 BC. One of the most important Greek cities of the Hellenistic period, it served as ...

Alexandria Alexandria ( ; ) is the List of cities and towns in Egypt#Largest cities, second largest city in Egypt and the List of coastal settlements of the Mediterranean Sea, largest city on the Mediterranean coast. It lies at the western edge of the Nile ...

Rhodes Rhodes (; ) is the largest of the Dodecanese islands of Greece and is their historical capital; it is the List of islands in the Mediterranean#By area, ninth largest island in the Mediterranean Sea. Administratively, the island forms a separ ...

, and

. By the late 3rd century CE, Epicureanism had all but died out, being opposed by other philosophies (mainly

Neoplatonism Neoplatonism is a version of Platonic philosophy that emerged in the 3rd century AD against the background of Hellenistic philosophy and religion. The term does not encapsulate a set of ideas as much as a series of thinkers. Among the common id ...

) that were then in the ascent. Interest in Epicureanism was resurrected in the

Age of Enlightenment The Age of Enlightenment (also the Age of Reason and the Enlightenment) was a Europe, European Intellect, intellectual and Philosophy, philosophical movement active from the late 17th to early 19th century. Chiefly valuing knowledge gained th ...

and continues in the modern era.

History

, the founder of the Epicurean School, was born in 342/1 BCE on the island of

Samos Samos (, also ; , ) is a Greek island in the eastern Aegean Sea, south of Chios, north of Patmos and the Dodecanese archipelago, and off the coast of western Turkey, from which it is separated by the Mycale Strait. It is also a separate reg ...

. In his early years, he studied under Pamphilus, a Platonist philosopher in

. Later, he received instruction from Nausiphanes of

Teos Teos () or Teo was an ancient Greek city on the coast of Ionia, on a peninsula between Chytrium and Myonnesus. It was founded by Minyans from Orchomenus, Ionians and Boeotians, but the date of its foundation is unknown. Teos was one of the t ...

, a follower of

. Although Epicurus would later downplay these early influences, it is generally acknowledged that Nausiphanes had a significant impact on the development of his thought. At the age of eighteen, Epicurus traveled to

Athens Athens ( ) is the Capital city, capital and List of cities and towns in Greece, largest city of Greece. A significant coastal urban area in the Mediterranean, Athens is also the capital of the Attica (region), Attica region and is the southe ...

for military service. After completing his duties, he devoted himself entirely to philosophy while living in Colophon.

taught and gained followers in

Mytilene Mytilene (; ) is the capital city, capital of the Greece, Greek island of Lesbos, and its port. It is also the capital and administrative center of the North Aegean Region, and hosts the headquarters of the University of the Aegean. It was fo ...

, the capital of the island

Lesbos Lesbos or Lesvos ( ) is a Greek island located in the northeastern Aegean Sea. It has an area of , with approximately of coastline, making it the third largest island in Greece and the List of islands in the Mediterranean#By area, eighth largest ...

, and then in

Lampsacus Lampsacus (; ) was an ancient Greece, ancient Greek city located in modern day Turkey, strategically situated on the eastern side of the Hellespont in the northern Troad. An inhabitant of Lampsacus was called a Lampsacene. The name has been trans ...

. In

, Epicurus bought a property for his school called "Garden", which later became the name of Epicurus' school. Its members included Hermarchus,

Idomeneus In Greek mythology, Idomeneus (; ) was a Cretan king and commander who led the Cretan armies to the Trojan War, in eighty black ships. He was also one of the suitors of Helen, as well as a comrade of the Telamonian Ajax. Meriones was his chari ...

Colotes Colotes of Lampsacus (, ''Kolōtēs Lampsakēnos''; c. 320 – after 268 BC) was a pupil of Epicurus. He wrote a work to prove "That it is impossible even to live according to the doctrines of the other philosophers" () and dedicated it to Ptolemy ...

Polyaenus Polyaenus or Polyenus ( ; see ae (æ) vs. e; , "much-praised") was a 2nd-century Roman Macedonian author and rhetorician, known best for his ''Stratagems in War'' (), which has been preserved. He was born in Bithynia, Asia Minor. The ''Suda'' c ...

, and Metrodorus. Epicurus emphasized friendship as an important ingredient of happiness, and the school seems to have been a moderately ascetic community which rejected the political limelight of Athenian philosophy. They were fairly

cosmopolitan Cosmopolitan may refer to: Internationalism * World citizen, one who eschews traditional geopolitical divisions derived from national citizenship * Cosmopolitanism, the idea that all of humanity belongs to a single moral community * Cosmopolitan ...

by Athenian standards, including women and slaves. Community activities held some importance, particularly the observance of

Eikas Epicureanism is a system of philosophy founded 307 BCE based upon the teachings of Epicurus, an ancient Greek philosopher. Epicurus was an atomist and materialist, following in the steps of Democritus. His materialism led him to religious skep ...

, a monthly social gathering. Some members were also

vegetarians Vegetarianism is the practice of abstaining from the consumption of meat (red meat, poultry, seafood, insects, and the flesh of any other animal). It may also include abstaining from eating all by-products of animal slaughter. A person who pra ...

as, from slight evidence, Epicurus did not eat meat, although no prohibition against eating meat was made. The school's popularity grew and it became, along with

Peripateticism The Peripatetic school ( ) was a philosophical school founded in 335 BC by Aristotle in the Lyceum in ancient Athens. It was an informal institution whose members conducted philosophical and scientific inquiries. The school fell into decline after ...

, and

Pyrrhonism Pyrrhonism is an Ancient Greek school of philosophical skepticism which rejects dogma and advocates the suspension of judgement over the truth of all beliefs. It was founded by Aenesidemus in the first century BCE, and said to have been inspired ...

, one of the dominant schools of

Hellenistic philosophy Hellenistic philosophy is Ancient Greek philosophy corresponding to the Hellenistic period in Ancient Greece, from the death of Alexander the Great in 323 BC to the Battle of Actium in 31 BC. The dominant schools of this period were the Stoics, the ...

, lasting strongly through the later

Roman Empire The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...

. Deciphered carbonized scrolls obtained from the library at the

contain a large number of works by

, a late Hellenistic Epicurean, and Epicurus himself, attesting to the school's enduring popularity.

Julius Caesar Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in Caesar's civil wa ...

also leaned considerably toward Epicureanism, which led to his plea against the death sentence during the trial against

Catiline Lucius Sergius Catilina ( – January 62 BC), known in English as Catiline (), was a Roman politician and soldier best known for instigating the Catilinarian conspiracy, a failed attempt to seize control of the Roman state in 63 BC. ...

, during the Catiline conspiracy where he spoke out against the

Stoic Stoic may refer to: * An adherent of Stoicism Stoicism is a school of Hellenistic philosophy that flourished in ancient Greece and Rome. The Stoics believed that the universe operated according to reason, ''i.e.'' by a God which is immersed i ...

Cato. His father-in-law, Lucius Calpurnius Piso Caesoninus, was also an adept of the school. In the 2nd century CE, comedian

Lucian of Samosata Lucian of Samosata (Λουκιανὸς ὁ Σαμοσατεύς, 125 – after 180) was a Hellenized Syria (region), Syrian satire, satirist, rhetorician and pamphleteer who is best known for his characteristic tongue-in-cheek style, with whi ...

and wealthy promoter of philosophy

were prominent Epicureans. After the death of Epicurus, leadership of the school passed to Hermarchus, who was originally from

. He was succeeded by Polystratus. Among Epicurus' closest students were Hermarchus,

, and Metrodorus of Lampsacus. One of the earliest

Roman Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of Roman civilization *Epistle to the Romans, shortened to Romans, a letter w ...

writers espousing Epicureanism was

Amafinius Gaius Amafinius (or Amafanius) was one of the earliest Roman writers in favour of the Epicurean philosophy. He probably lived in the late 2nd and early 1st century BC. He wrote several works, which are censured by Cicero as deficient in arrangement ...

, although his work has not survived. The Roman philosopher

Cicero Marcus Tullius Cicero ( ; ; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, orator, writer and Academic skeptic, who tried to uphold optimate principles during the political crises tha ...

later wrote that he had listened to Phaedrus, who served as the head of the Athenian school around 90 BCE and had come to

Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...

. However, the most well-known follower of Epicureanism was the Roman poet Titus Lucretius Carus (c. 91–51 BCE).

expressed Epicurus' philosophical ideas in his didactic poem ''

De Rerum Natura (; ''On the Nature of Things'') is a first-century BC Didacticism, didactic poem by the Roman Republic, Roman poet and philosopher Lucretius () with the goal of explaining Epicureanism, Epicurean philosophy to a Roman audience. The poem, writte ...

'' (''On the Nature of Things''). The main goal of this work was to free people from the fear of the gods and death, and to guide them toward achieving inner peace and tranquility. The Epicurean philosopher Philodemus of Gadara, until the 18th century only known as a poet of minor importance, rose to prominence as much of his work, along with other Epicurean material such as the lectures of

, was discovered in the

. Another ancient Epicurean is

, in the 2nd century CE, who composed a large inscription at

Diogenes Laërtius Diogenes Laërtius ( ; , ; ) was a biographer of the Greek philosophers. Little is definitively known about his life, but his surviving book ''Lives and Opinions of Eminent Philosophers'' is a principal source for the history of ancient Greek ph ...

reports slanderous stories, circulated by Epicurus' opponents. By the late third century CE, however, there was little trace of its existence. With growing dominance of

and

, and later,

Christianity Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...

, Epicureanism declined.

Philosophy

Physics

In his letter to Herodotus (not the

historian A historian is a person who studies and writes about the past and is regarded as an authority on it. Historians are concerned with the continuous, methodical narrative and research of past events as relating to the human species; as well as the ...

), Epicurus presented three principles as to the nature of the physical world, i.e. that that which exists cannot come into being from that which does not exist, that which is destroyed does not cease to exist, and all that exists now always did exist and always will. The object of these principles was to establish the fact that all that constitutes the world is permanent and unchanging. Epicurean physics held that the entire universe consisted of two things: matter and void. Matter is made up of atoms, which are tiny bodies that have only the unchanging qualities of shape, size, and weight. The Epicureans believed that atoms were unchanging because the world was ordered and that changes had to have specific and consistent sources, e.g. a plant species only grows from a seed of the same species, but that in order for the universe to persist, what it is ultimately made up of must not be able to be changed or else the universe would be essentially destroyed. Epicurus holds that there must be an infinite supply of atoms, although only a finite number of types of atoms, as well as an infinite amount of void. Epicurus explains this position in his letter to Herodotus:

Moreover, the sum of things is unlimited both by reason of the multitude of the atoms and the extent of the void. For if the void were infinite and bodies finite, the bodies would not have stayed anywhere but would have been dispersed in their course through the infinite void, not having any supports or counterchecks to send them back on their upward rebound. Again, if the void were finite, the infinity of bodies would not have anywhere to be.

Because of the infinite supply of atoms, there are an infinite number of worlds, or ''cosmoi''. Some of these worlds could be vastly different from our own, some quite similar, and all of the worlds were separated from each other by vast areas of void (''metakosmia''). Epicureanism states that atoms are unable to be broken down into any smaller parts because void is necessary for matter to move. Anything which consists of both void and matter can be broken down, while if something contains no void then it has no way to break apart because no part of the substance could be broken down into a smaller subsection of the substance. Atoms are constantly moving in one of four different ways. Atoms can simply collide with each other and then bounce off of each other. When joined with each other and forming a larger object, atoms can vibrate as they collide into each other while still maintaining the overall shape of the larger object. When not prevented by other atoms, all atoms move at the same speed naturally downwards in relation to the rest of the world. This downwards motion is natural for atoms; however, as their fourth means of motion, atoms can at times randomly swerve out of their usual downwards path. This swerving motion is what allowed for the creation of the universe, since as more and more atoms swerved and collided with each other, objects were able to take shape as the atoms joined together. Without the swerve, the atoms would never have interacted with each other, and simply continued to move downwards at the same speed. Epicurus also felt that the swerve was what accounted for humanity's free will. If it were not for the swerve, humans would be subject to a never-ending chain of cause and effect. This was a point which Epicureans often used to criticize

atomic theory Atomic theory is the scientific theory that matter is composed of particles called atoms. The definition of the word "atom" has changed over the years in response to scientific discoveries. Initially, it referred to a hypothetical concept of ...

Epistemology

Epicurean philosophy employs an

empirical Empirical evidence is evidence obtained through sense experience or experimental procedure. It is of central importance to the sciences and plays a role in various other fields, like epistemology and law. There is no general agreement on how t ...

epistemology, one based on the senses.

Sense perception

Epicureans believed that senses also relied on atoms. Every object was continually emitting particles from itself that would then interact with the observer. All sensations, such as sight, smell, or sound, relied on these particles. While the atoms that were emitted did not have the qualities that the senses were perceiving, the manner in which they were emitted caused the observer to experience those sensations, e.g. red particles were not themselves red but were emitted in a manner that caused the viewer to experience the color red. The atoms are not perceived individually, but rather as a continuous sensation because of how quickly they move. The Epicureans believed that all sense perceptions were true, and that errors arise in how we judge those perceptions. When we form judgments about things (''hupolepsis''), they can be verified and corrected through further sensory information. For example, if someone sees a tower from far away that appears to be round, and upon approaching the tower they see that it is actually square, they would come to realize that their original judgement was wrong and correct their wrong opinion.

Criterion of truth

Epicurus is said to have proposed three

criteria of truth In epistemology, criteria of truth (or tests of truth) are standards and rules used to judge the accuracy of statements and claims. They are tools of verification, and as in the problem of the criterion, the reliability of these tools is dispute ...

: sensations (''aisthêsis''), preconceptions (''prolepsis''), and feelings (''pathê''). A fourth criterion called "presentational applications of the mind" (''phantastikai epibolai tês dianoias'') was said to have been added by later Epicureans. These criteria formed the method through which Epicureans thought we gained knowledge. Since Epicureans thought that sensations could not deceive, sensations are the first and main criterion of truth for Epicureans. Even in cases where sensory input seems to mislead, the input itself is true and the error arises from our judgments about the input. For example, when one places a straight oar in the water, it appears bent. The Epicurean would argue that the image of the oar, that is, the atoms traveling from the oar to the observer's eyes, has been shifted and thus really does arrive at the observer's eyes in the shape of a bent oar. The observer makes the error in assuming that the image he or she receives correctly represents the oar and has not been distorted in some way. In order to not make erroneous judgments about perceivable things and instead verify one's judgment, Epicureans believed that one needed to obtain "clear vision" (''enargeia'') of the perceivable thing by closer examination. This acted as a justification for one's judgements about the thing being perceived. ''Enargeia'' is characterized as sensation of an object that has been unchanged by judgments or opinions and is a clear and direct perception of that object. An individual's preconceptions are his or her concepts of what things are, e.g. what someone's idea of a horse is, and these concepts are formed in a person's mind through sensory input over time. When the word that relates to the preconception is used, these preconceptions are summoned up by the mind into the person's thoughts. It is through our preconceptions that we are able to make judgments about the things that we perceive. Preconceptions were also used by Epicureans to avoid the paradox proposed by Plato in the ''

Meno ''Meno'' (; , ''Ménōn'') is a Socratic dialogue written by Plato around 385 BC., but set at an earlier date around 402 BC. Meno begins the dialogue by asking Socrates whether virtue (in , '' aretē'') can be taught, acquired by practice, o ...

'' regarding learning. Plato argues that learning requires us to already have knowledge of what we are learning, or else we would be unable to recognize when we had successfully learned the information. Preconceptions, Epicureans argue, provide individuals with that pre-knowledge required for learning. Our feelings or emotions (''pathê'') are how we perceive pleasure and pain. They are analogous to sensations in that they are a means of perception, but they perceive our internal state as opposed to external things. According to Diogenes Laertius, feelings are how we determine our actions. If something is pleasurable, we pursue that thing, and if something is painful, we avoid that thing. The idea of "presentational applications of the mind" is an explanation for how we can discuss and inquire about things we cannot directly perceive. We receive impressions of such things directly in our minds, instead of perceiving them through other senses. The concept of "presentational applications of the mind" may have been introduced to explain how we learn about things that we cannot directly perceive, such as the gods.

Ethics

Epicureanism bases its ethics on a hedonistic set of values, seeing pleasure as the chief good in life. Hence, Epicurus advocated living in such a way as to derive the greatest amount of pleasure possible during one's lifetime, yet doing so moderately in order to avoid the suffering incurred by overindulgence in such pleasure. Epicurus actively recommended against passionate love, and believed it best to avoid marriage altogether. He viewed recreational sex as a natural, but not necessary, desire that should be generally avoided. Since the political life could give rise to desires that could disturb virtue and one's peace of mind, such as a lust for power or a desire for fame, participation in politics was discouraged. Further, Epicurus sought to eliminate the fear of the gods and of death, seeing those two fears as chief causes of strife in life.

Pleasure

Epicureans had a very specific understanding of what the greatest pleasure was, and the focus of their ethics was on the avoidance of pain rather than seeking out pleasure. As evidence for this, Epicureans say that nature seems to command us to avoid pain, and they point out that all animals try to avoid pain as much as possible. Epicureanism divided pleasure into two broad categories: ''pleasures of the body'' and ''pleasures of the mind''. ''Pleasures of the body'' involve sensations of the body, such as the act of eating delicious food or of being in a state of comfort free from pain, and exist only in the present. One can only experience pleasures of the body in the moment, meaning they only exist as a person is experiencing them. ''Pleasures of the mind'' involve mental processes and states; feelings of joy, the lack of fear, and pleasant memories are all examples of pleasures of the mind. These pleasures of the mind do not only exist in the present, but also in the past and future, since memory of a past pleasant experience or the expectation of some potentially pleasing future can both be pleasurable experiences. Because of this, the pleasures of the mind are considered to be greater than those of the body. Emphasis was placed on pleasures of the mind rather than on physical pleasures. The Epicureans further divided each of these types of pleasures into two categories: ''kinetic pleasure'' and ''katastematic pleasure''. Absence of pain,

aponia Epicureanism is a system of philosophy founded 307 Common Era, BCE based upon the teachings of Epicurus, an ancient Greek philosopher. Epicurus was an Atomism, atomist and materialist, following in the steps of Democritus. His materialism led h ...

, and lack of disturbance of mind,

, are two of the katastematic pleasures and often seen as the focal ones to

. ''Kinetic pleasure'' is the physical or mental pleasures that involve action or change. Eating delicious food, as well as fulfilling desires and removing pain, which is itself considered a pleasurable act, are all examples of kinetic pleasure in the physical sense. According to Epicurus, feelings of joy would be an example of mental kinetic pleasure. ''Katastematic pleasure'' is the pleasure one feels while in a state without pain. Like kinetic pleasures, katastematic pleasures can also be physical, such as the state of not being thirsty, or mental, such as freedom from a state of fear. While the pursuit of pleasure formed the focal point of the philosophy, this was largely directed to the "static pleasures" of minimizing pain, anxiety and suffering. From this understanding, Epicureans concluded that the greatest pleasure a person could reach was the complete removal of all pain, both physical and mental. The ultimate goal then of Epicurean ethics was to reach a state of ''aponia'' and ''ataraxia''.

Desire

In order to do this an Epicurean had to control their desires, because desire itself was seen as painful. Not only will controlling one's desires bring about ''aponia'', as one will rarely suffer from not being physically satisfied, but controlling one's desires will also help to bring about ''ataraxia'' because one will not be anxious about becoming discomforted since one would have so few desires anyway. The Epicureans divide desires into three classes: natural and necessary, natural but not necessary, and vain and empty: *''Natural and necessary'': These desires are limited desires that are innately present in all humans; it is part of human nature to have them. They are necessary for one of three reasons: necessary for happiness, necessary for freedom from bodily discomfort, and necessary for life. Clothing and shelter would belong to the first two categories, while something like food would belong to the third. *''Natural but not necessary'': These desires are innate to humans, but they do not need to be fulfilled for their happiness or their survival. Wanting to eat delicious food when one is hungry is an example of a natural but not necessary desire. The main problem with these desires is that they fail to substantially increase a person's happiness, and at the same time require effort to obtain and are desired by people due to false beliefs that they are actually necessary. It is for this reason that they should be avoided. *''Vain and empty'': These desires are neither innate to humans nor required for happiness or health; indeed, they are also limitless and can never be fulfilled. Desires of wealth or fame would fall in this class, and such desires are to be avoided because they will ultimately only bring about discomfort. If one follows only natural and necessary desires, then, according to Epicurus, one would be able to reach ''aponia'' and ''ataraxia'' and thereby the highest form of happiness. Unnecessary and, especially, artificially produced desires were to be suppressed.

Politics

The Epicurean understanding of

justice In its broadest sense, justice is the idea that individuals should be treated fairly. According to the ''Stanford Encyclopedia of Philosophy'', the most plausible candidate for a core definition comes from the ''Institutes (Justinian), Inst ...

was inherently self-interested. Justice was deemed good because it was seen as mutually beneficial. Individuals would not act unjustly even if the act was initially unnoticed because of possibly being caught and punished. Both punishment and fear of punishment would cause a person disturbance and prevent them from being happy. Epicurus was also an early thinker to develop the notion of justice as a

social contract In moral and political philosophy, the social contract is an idea, theory, or model that usually, although not always, concerns the legitimacy of the authority of the state over the individual. Conceptualized in the Age of Enlightenment, it ...

, and in part attempts to address issues with the society described in

Plato Plato ( ; Greek language, Greek: , ; born BC, died 348/347 BC) was an ancient Greek philosopher of the Classical Greece, Classical period who is considered a foundational thinker in Western philosophy and an innovator of the writte ...

's ''

Republic A republic, based on the Latin phrase ''res publica'' ('public affair' or 'people's affair'), is a State (polity), state in which Power (social and political), political power rests with the public (people), typically through their Representat ...

''. The social contract theory established by Epicureanism is based on mutual agreement, not divine decree. He defined justice as an agreement made by people not to harm each other. The point of living in a society with laws and punishments is to be protected from harm so that one is free to pursue happiness. Because of this, laws that do not contribute to promoting human happiness are not just. He gave his own unique version of the

ethic of reciprocity Ethics is the philosophy, philosophical study of Morality, moral phenomena. Also called moral philosophy, it investigates Normativity, normative questions about what people ought to do or which behavior is morally right. Its main branches inclu ...

, which differs from other formulations by emphasizing minimizing harm and maximizing happiness for oneself and others. Epicurean ideas on politics disagree with other philosophical traditions, namely the Stoic, Platonist and Aristotelian traditions. To Epicureans all our social relations are a matter of how we perceive each other, of customs and traditions. No one is inherently of higher value or meant to dominate another. That is because there is no metaphysical basis for the superiority of one kind of person, all people are made of the same atomic material and are thus naturally equal. Epicureans also discourage political participation and other involvement in politics. However Epicureans are not

apolitical Apoliticism is apathy or antipathy towards all political affiliations. A person may be described as apolitical if they are uninterested or uninvolved in politics. Being apolitical can also refer to situations in which people take an unbiased p ...

, it is possible that some political association could be seen as beneficial by some Epicureans. Some political associations could lead to certain benefits to the individual that would help to maximize pleasure and avoid physical or mental distress.

Friendship

Epicurus laid great emphasis on developing friendships as the basis of a satisfying life. The avoidance or freedom from hardship and fear is ideal to the Epicureans. While this avoidance or freedom could conceivably be achieved through political means, it was insisted by Epicurus that involvement in politics would not release one from fear and he advised against a life of politics. Epicurus also discouraged contributing to political society by starting a family, as the benefits of a wife and children are outweighed by the trouble brought about by having a family. Instead Epicurus encouraged a formation of a community of friends outside the traditional political state. This community of virtuous friends would focus on internal affairs and justice. However, Epicureanism is adaptable to circumstance as is the Epicurean approach to politics. The same approaches will not always work in protection from pain and fear. In some situations it will be more beneficial to have a family and in other situations it will be more beneficial to participate in politics. It is ultimately up to the Epicurean to analyse their circumstance and take whatever action befits the situation.

Death

Epicureanism rejects

immortality Immortality is the concept of eternal life. Some species possess "biological immortality" due to an apparent lack of the Hayflick limit. From at least the time of the Ancient Mesopotamian religion, ancient Mesopotamians, there has been a con ...

. It believes in the soul, but suggests that the soul is mortal and material, just like the body. Epicurus rejected any possibility of an afterlife, while still contending that one need not fear death: "Death is nothing to us; for that which is dissolved, is without sensation, and that which lacks sensation is nothing to us." From this doctrine arose the Epicurean Epitaph: ''Non fui, fui, non sum, non curo'' ("I was not; I was; I am not; I do not care."), which is inscribed on the gravestones of his followers and seen on many ancient gravestones of the

Gods

Epicureanism does not deny the existence of the gods; rather it denies their involvement in the world. According to Epicureanism, the gods do not interfere with human lives or the rest of the universe in any way – thus, it shuns the idea that frightening weather events are divine retribution. One of the fears the Epicurean ought to be freed from is fear relating to the actions of the gods. The manner in which the Epicurean gods exist is still disputed. Some scholars say that Epicureanism believes that the gods exist outside the mind as material objects (the realist position), while others assert that the gods only exist in our minds as ideals (the

idealist Idealism in philosophy, also known as philosophical realism or metaphysical idealism, is the set of metaphysical perspectives asserting that, most fundamentally, reality is equivalent to mind, spirit, or consciousness; that reality is entir ...

position). The realist position holds that Epicureans understand the gods as existing as physical and immortal beings made of atoms that reside somewhere in reality. However, the gods are completely separate from the rest of reality; they are uninterested in it, play no role in it, and remain completely undisturbed by it. Instead, the gods live in what is called the ''metakosmia'', or the space between worlds. Contrarily, the idealist (sometimes called the "non-realist position" to avoid confusion) position holds that the gods are just idealized forms of the best human life, and it is thought that the gods were emblematic of the life one should aspire towards. The debate between these two positions was revived by A. A. Long and David Sedley in their 1987 book, ''The Hellenistic Philosophers'', in which the two argued in favour of the idealist position. While a scholarly consensus has yet to be reached, the realist position remains the prevailing viewpoint at this time.

Legacy

Later antiquity

The early Christian writer

Lactantius Lucius Caecilius Firmianus Lactantius () was an early Christian author who became an advisor to Roman emperor Constantine I, guiding his Christian religious policy in its initial stages of emergence, and a tutor to his son Crispus. His most impo ...

criticizes Epicurus at several points throughout his ''Divine Institutes'' and preserves the ''Riddle of Epicurus'', or ''

Problem of evil The problem of evil is the philosophical question of how to reconcile the existence of evil and suffering with an Omnipotence, omnipotent, Omnibenevolence, omnibenevolent, and Omniscience, omniscient God.The Stanford Encyclopedia of Philosophy, ...

'', a famous argument against the existence of an all-powerful and providential God or gods. This type of ''

trilemma A trilemma is a difficult choice from three options, each of which is (or appears) unacceptable or unfavourable. There are two logically equivalent ways in which to express a trilemma: it can be expressed as a choice among three unfavourable optio ...

'' argument (God is omnipotent, God is good, but Evil exists) was one favoured by the ancient Greek

skeptics Skepticism ( US) or scepticism ( UK) is a questioning attitude or doubt toward knowledge claims that are seen as mere belief or dogma. For example, if a person is skeptical about claims made by their government about an ongoing war then the p ...

, and this argument may have been wrongly attributed to Epicurus by Lactantius, who, from his Christian perspective, regarded Epicurus as an

atheist Atheism, in the broadest sense, is an absence of belief in the existence of deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the position that there no ...

.Mark Joseph Larrimore, (2001), ''The Problem of Evil'', pp. xix–xxi. Wiley-Blackwell According to Reinhold F. Glei, it is settled that the argument of ''

theodicy In the philosophy of religion, a theodicy (; meaning 'vindication of God', from Ancient Greek θεός ''theos'', "god" and δίκη ''dikē'', "justice") is an argument that attempts to resolve the problem of evil that arises when all powe ...

'' is from an academical source which is not only not Epicurean, but even anti-Epicurean. The earliest extant version of this ''trilemma'' appears in the writings of the

Pyrrhonist Pyrrhonism is an Ancient Greek school of philosophical skepticism which rejects dogma and advocates the suspension of judgement over the truth of all beliefs. It was founded by Aenesidemus in the first century BCE, and said to have been inspired ...

philosopher

Sextus Empiricus Sextus Empiricus (, ; ) was a Greek Pyrrhonist philosopher and Empiric school physician with Roman citizenship. His philosophical works are the most complete surviving account of ancient Greek and Roman Pyrrhonism, and because of the argument ...

. Epikoros is a Jewish term figuratively meaning "a heretic", cited in the

Mishnah The Mishnah or the Mishna (; , from the verb ''šānā'', "to study and review", also "secondary") is the first written collection of the Jewish oral traditions that are known as the Oral Torah. Having been collected in the 3rd century CE, it is ...

, referring to one who does not have a share in the

world to come The world to come, age to come, heaven on Earth, and the Kingdom of God are eschatology, eschatological phrases reflecting the belief that the World (theology), current world or Dispensation (period), current age is flawed or cursed and will be r ...

Although

rabbinic literature Rabbinic literature, in its broadest sense, is the entire corpus of works authored by rabbis throughout Jewish history. The term typically refers to literature from the Talmudic era (70–640 CE), as opposed to medieval and modern rabbinic ...

does not make any specific reference to the

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

philosopher

, it is apparent that the term is derived from the philosopher's name.

Middle Ages and Renaissance

Dante Alighieri Dante Alighieri (; most likely baptized Durante di Alighiero degli Alighieri; – September 14, 1321), widely known mononymously as Dante, was an Italian Italian poetry, poet, writer, and philosopher. His ''Divine Comedy'', originally called ...

's ''

Divine Comedy The ''Divine Comedy'' (, ) is an Italian narrative poetry, narrative poem by Dante Alighieri, begun and completed around 1321, shortly before the author's death. It is widely considered the pre-eminent work in Italian literature and one of ...

'', the Epicureans are depicted as

heretics Heresy is any belief or theory that is strongly at variance with established beliefs or customs, particularly the accepted beliefs or religious law of a religious organization. A heretic is a proponent of heresy. Heresy in Christianity, Judai ...

suffering in the

sixth circle of hell ''Inferno'' (; Italian for 'Hell') is the first part of Italian writer Dante Alighieri's 14th-century narrative poem ''The Divine Comedy'', followed by and . The ''Inferno'' describes the journey of a fictionalised version of Dante himself t ...

. In fact, Epicurus appears to represent the ultimate heresy.

Francis Bacon Francis Bacon, 1st Viscount St Alban (; 22 January 1561 – 9 April 1626) was an English philosopher and statesman who served as Attorney General and Lord Chancellor of England under King James I. Bacon argued for the importance of nat ...

wrote an

apothegm {{Short pages monitor