Epicurus

Early Life

Epicurus was born in 341 BCE on the island of Samos, where his father Neocles had settled as an Athenian colonist. He reportedly began studying philosophy at fourteen and was influenced by both Democritean atomism and Platonic thought. After serving his two years of military service in Athens (where he may have attended lectures by Xenocrates at the Academy and Aristotle at the Lyceum), he taught in various cities in Asia Minor before establishing himself permanently in Athens in 306 BCE.

The Garden

In Athens, Epicurus purchased a house with a garden (kēpos) that became the school's permanent home — and its popular name. Unlike the Academy and the Lyceum, the Garden admitted women and slaves as full members, a revolutionary practice in ancient Athens. The community was organized around shared philosophical life, emphasizing friendship (philia), simple pleasures, and withdrawal from political engagement. The famous motto inscribed at the entrance reportedly read: 'Stranger, here you will do well to tarry; here our highest good is pleasure.'

Atomic Physics

Epicurus adopted Democritean atomism but modified it significantly. Like Democritus, he held that reality consists of atoms (physically indivisible particles) and void (empty space). But Epicurus introduced a crucial innovation: the swerve (parenklisis, Latin clinamen). Atoms do not simply fall straight through the void but occasionally deviate slightly from their path. This random swerve serves two purposes: it explains how atoms collide and form compound bodies (without the swerve, parallel-falling atoms would never meet), and it provides the physical basis for free will — without a random element in atomic motion, determinism would eliminate human agency.

Epicurus also held that atoms have weight (which Democritus may not have attributed to them) and that they fall naturally 'downward' through infinite void. There are infinitely many atoms and infinitely many worlds, constantly forming and dissolving throughout infinite space.

Epistemology: The Canon

Epicurus developed a straightforward empiricist epistemology in his work 'The Canon' (Kanōn). The three criteria of truth are:
1. Sensations (aisthēseis): All sensations are true — they are direct physical impacts of atomic films (eidōla) on the sense organs. Error arises not in sensation itself but in the judgment we add to it.
2. Preconceptions (prolēpseis): General concepts formed through repeated experience — e.g., the concept 'human' formed from many encounters with humans. These serve as templates for recognition.
3. Feelings (pathē): Pleasure and pain as criteria for action — pleasure signals what is natural and beneficial; pain signals what is harmful.

Ethics: The Fourfold Remedy

Epicurus' ethics centers on the identification of pleasure (hēdonē) as the highest good and pain as the greatest evil. But Epicurean pleasure is fundamentally different from crude hedonism:

• Static vs. kinetic pleasure: The highest pleasure is not the active enjoyment of food, drink, or sex (kinetic pleasure) but the stable state of freedom from bodily pain (aponia) and mental disturbance (ataraxia) — static pleasure.
• Natural and necessary desires: Epicurus classified desires into: (1) natural and necessary (food, shelter, clothing), (2) natural but unnecessary (gourmet food, sex), and (3) neither natural nor necessary (fame, political power). Happiness requires satisfying only the first category.

The 'fourfold remedy' (tetrapharmakos), summarizing Epicurean therapy, was:
1. God is not to be feared
2. Death is nothing to us
3. What is good is easy to get
4. What is terrible is easy to endure

The argument against fearing death is Epicurus' most famous philosophical contribution: 'Death is nothing to us, since when we exist death is not present, and when death is present we do not exist.' Since death is the complete cessation of sensation, there is nothing in death to fear.

Friendship

Epicurus placed extraordinary value on friendship (philia), declaring it the most important of all the goods that wisdom provides for a blessed life. The Garden community was organized around friendship, and Epicureans cultivated deep personal bonds. This emphasis on human connection, combined with withdrawal from competitive public life, gives Epicureanism a distinctly communitarian character.

Legacy

Epicurus died in 270 BCE, reportedly from kidney stones, writing a moving last letter to his friends from his deathbed. He was immensely prolific — Diogenes Laërtius lists over 300 works — but almost everything is lost. His teachings survive through three letters preserved by Diogenes Laërtius (Letter to Herodotus on physics, Letter to Pythocles on celestial phenomena, Letter to Menoeceus on ethics), the Kuriai Doxai (Principal Doctrines), the Vatican Sayings, and most magnificently through Lucretius' poem De Rerum Natura.

The Garden survived for over six centuries. Epicureanism was one of the dominant philosophies of the Hellenistic and Roman periods, rivaling Stoicism. In the early modern period, Gassendi's revival of Epicurean atomism contributed to the scientific revolution. Epicurus' arguments about death, pleasure, and the gods remain vital in contemporary philosophy.