[Revised entry by Benjamin Morison on March 12, 2026.
Changes to: Main text, Bibliography, supplement1.html, supplement3.html]
Sextus Empiricus was a Pyrrhonian Skeptic living probably in the second or third century CE, many of whose works survive, including the Outlines of Pyrrhonism, the best and fullest account we have of Pyrrhonian skepticism (a kind of skepticism named for Pyrrho (see entry on Ancient Skepticism)). Pyrrhonian skepticism involves having no beliefs about philosophical, scientific, or theoretical matters – and according to some…

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