Pyrrho

Life

Pyrrho was born around 365 BCE in Elis, in the western Peloponnese. He reportedly studied under the Democritean philosopher Anaxarchus and accompanied him on Alexander the Great's campaign to India (327–325 BCE). In India, according to Diogenes Laërtius, Pyrrho encountered the gymnosophists — naked ascetic philosophers — and possibly the Buddhist tradition, which may have influenced his emphasis on detachment and equanimity.

Upon returning to Elis, Pyrrho lived quietly and was greatly respected by his fellow citizens, who honored him with the office of high priest and exempted philosophers from taxation in his honor. Despite his philosophical radicalism, he lived a conventional domestic life, reportedly helping his sister Philista with household tasks. He died around 275 BCE, reportedly at about ninety.

The Pyrrhonian Stance

Pyrrho wrote nothing, and his philosophy is known primarily through the reports of his student Timon of Phlius and the later systematization by Aenesidemus and Sextus Empiricus. The core Pyrrhonian position can be summarized in three steps:

1. Equipollence (isostheneia): For every argument or appearance, an equally strong opposing argument or appearance can be produced.
2. Suspension of judgment (epochē): Since the arguments on both sides are equally balanced, the rational response is to suspend judgment — neither affirming nor denying any doctrinal claim.
3. Tranquility (ataraxia): Suspension of judgment leads to a state of psychological tranquility — the peace that comes from no longer being troubled by conflicting beliefs about what is true, good, or necessary.

A famous passage from Aristocles (preserved by Eusebius) reports that Pyrrho's student Timon distilled the master's teaching into three questions: (1) What are things really like? — We cannot determine this. (2) What attitude should we adopt toward them? — We should withhold judgment. (3) What will result from this attitude? — Tranquility.

Practical Life

The obvious objection to radical skepticism is that it makes practical life impossible. Pyrrho's response was that the skeptic can act on the basis of appearances (phainomena), customs, laws, and natural impulses without making theoretical commitments about how things really are. You can eat when hungry, follow local laws, and practice a trade — all without believing that you have grasped the ultimate nature of anything.

Legacy

Pyrrho's influence was mediated primarily through the later Pyrrhonian tradition. Aenesidemus (1st century BCE) revived Pyrrhonism after it had been dormant, and Sextus Empiricus (2nd century CE) systematized it in the Outlines of Pyrrhonism. Through Sextus, Pyrrhonian skepticism profoundly influenced early modern philosophy — Montaigne, Descartes, Hume, and Kant all engaged with skeptical arguments that trace back to the Pyrrhonian tradition.