κυνικός

Cynic comes from Greek κυνικός (kynikos), meaning 'dog-like,' from κύων (kyōn), 'dog.' The name was applied to a school of Greek philosophy founded in the fourth century BCE, most famously associated with Diogenes of Sinope. The Cynics rejected all social conventions — wealth, reputation, political power, comfort — and lived with radical simplicity, sleeping in the open, begging for food, and deliberately flouting propriety. They were called 'dogs' either because Antisthenes, an early Cynic, taught at the Cynosarges gymnasium ('white dog'), or simply because they lived like dogs: in public, without shame, by instinct.

Diogenes was the most extreme and most celebrated Cynic. He lived in a large ceramic jar in the agora of Athens. He carried a lantern in daylight, claiming to be searching for an honest man. When Alexander the Great visited and asked what he could do for the philosopher, Diogenes replied: 'Stand out of my sunlight.' He masturbated in public, ate raw meat, and urinated on people who insulted him. His philosophy was not madness but method: every transgression was a demonstration that social norms were arbitrary.

The Cynics' central teaching was that virtue — the only good — consisted in living according to nature and rejecting everything artificial. They dismissed wealth, fame, nationality, and even hygiene as distractions from the good life. Their influence was enormous: Stoicism, the most important philosophical school of the Roman world, grew directly from Cynic roots. Zeno of Citium, Stoicism's founder, studied under the Cynic Crates of Thebes.

The modern meaning of 'cynic' — one who believes all human action is motivated by self-interest — emerged gradually from the seventeenth century onward. The shift is both a betrayal and a fulfillment of the original. The ancient Cynics were not pessimists; they were radical optimists who believed humans could live better by wanting less. But their relentless exposure of hypocrisy — their insistence that the emperor was always naked — created the template for modern cynicism: the habit of assuming the worst about everyone's motives.