Abstract
Despite their divergences, I argue that Sextus, Montaigne, and Hume are committed to several substantive points of commonality and that these commonalities justify us in speaking of them as belonging to a unitary Pyrrhonist tradition. In this tradition, Pyrrhonizing doubt serves to chart the boundary of that-which-resists-doubt, thereby simultaneously charting the shape of that complex of nature and custom which constitutes the bedrock of human life — the life that remains after doubt has done its worst