Two ways of doubting the usual answers
Cynics and Skeptics are often mentioned together because both questioned what most Greeks took for granted. They differed sharply in method. The Cynics attacked custom through behaviour, often shocking behaviour. The Skeptics attacked claims to knowledge through argument. Both, in their own way, wanted a life free from needless worry, and both left a lasting mark on later philosophy.
Both movements are known mostly through anecdotes and later summaries, especially the biographical collection by Diogenes Laertius, written in the third century CE or so. The stories are vivid, but many are better treated as traditions than as recorded fact.
The Cynics: living by nature
Cynicism is traditionally traced to Antisthenes, a follower of Socrates, though how far he founded a school is debated. Its best-known figure is Diogenes of Sinope, who lived in the fourth century BCE and spent much of his life in Athens and Corinth. Ancient writers say he left Sinope in connection with the local coinage, and the phrase “defacing the currency” became a slogan for the Cynic attitude toward convention. Whether the story refers to literal coin minting offences or is a symbolic reading is uncertain.
The Cynic position can be summarised in three ideas.
- Live according to nature. Cynics held that human beings need far less than society tells them, and that wealth, status and refinement are distractions from virtue.
- Training and endurance. Cynic practice involved deliberate hardship: simple food, a rough cloak, and indifference to heat and cold.
- Frank speech. The Cynic spoke bluntly to anyone, from beggars to kings, taking the free speech prized in Athenian democracy to an extreme.
Stories about Diogenes illustrate these points. He is said to have lived in a large storage jar, to have walked in daylight with a lamp looking for an honest person, and to have told Alexander the Great, who offered him a favour, to stand out of his sunlight. These anecdotes may be literary inventions or exaggerations, but they capture the intended message: authority and property mean little compared with self-sufficiency.
The name “Cynic” is traditionally linked to the Greek word for dog, either because of the shameless behaviour or because Antisthenes is said to have taught at a gymnasium called Cynosarges. Ancient authors give both explanations.
Cynicism spread beyond its founder. Crates of Thebes gave away his property to live as a Cynic, and his wife Hipparchia joined him, a notable case of a woman choosing the philosophic life openly. Crates also taught Zeno, who later founded Stoicism, so Cynic ideas about virtue and self-sufficiency passed into a more systematic school.
The Skeptics: suspending judgment
Skepticism has two main branches. The first is Pyrrhonism, named after Pyrrho of Elis, who is traditionally said to have travelled with Alexander’s army to the east and to have been impressed by ascetics he met there. Pyrrho wrote nothing, so his views are mostly known through his follower Timon of Phlius and through much later sources, and scholars debate how closely the later Pyrrhonists reflect him.
The Pyrrhonist argument runs as follows. For any claim about how things really are, an opposing claim can be made with seemingly equal force. Faced with this balance, the sensible response is epoché, suspension of judgment. The surprising payoff, as the Pyrrhonists described it, is ataraxia, or tranquillity: once you stop insisting that things must be one way, you stop being disturbed when they turn out otherwise. They did not claim to know that nothing can be known, which would itself be a claim to knowledge. Instead they went on investigating and followed appearances and customs in daily life.
The best surviving account is by Sextus Empiricus, who wrote around the second or third century CE. He is traditionally described as a physician of the empiric school, so his outlook ties in with Greco-Roman medicine, which also argued about how far reasoning beyond observation could be trusted.
The second branch is Academic Skepticism. Plato’s Academy turned toward doubt under Arcesilaus in the third century BCE, and later under Carneades, who argued that certainty is unattainable but that some impressions are more persuasive than others and can guide action. Carneades was one of three Athenian philosophers who visited Rome as envoys in 155 BCE. He is reported to have argued for justice one day and against it the next, which unsettled conservative members of the Roman Senate. Later Academics moved away from skepticism toward a blend of Platonic and Stoic positions.
How the two schools compare
| Question | Cynics | Skeptics |
|---|---|---|
| Main target | Social convention and status | Claims to certain knowledge |
| Main method | Example, provocation, frugal living | Opposing arguments, suspension of judgment |
| Aim | Virtue and self-sufficiency | Tranquillity |
| Attitude to custom | Open defiance | Quiet acceptance in practice |
The table captures a real contrast. A Cynic like Diogenes would contradict a crowd to its face; a Pyrrhonist would avoid taking a side and carry on following local custom. Yet both were suspicious of grand theories, and both argued that peace of mind depends more on one’s attitude than on circumstances.
Legacy
Cynic ideas fed directly into Stoicism, especially the emphasis on virtue and indifference to wealth, and the term “cynic” in modern English has drifted far from its ancient meaning. Skeptical arguments were revived in Renaissance Europe after Sextus Empiricus’s work was rediscovered and printed, and they influenced later debates about the limits of knowledge. Neither school built a large institution comparable to the Academy or Lyceum, but both showed that a philosophical life could mean testing the foundations of belief and habit rather than building a system.