Diogenes

Born to a prosperous family in Sinope around 413 or 403 BC, Diogenes saw his comfortable life shatter after a scandal involving debased coinage forced him into exile. The rupture became his awakening: he rejected wealth entirely, embraced absolute self-sufficiency, and made his body the argument. He slept in a barrel, performed acts considered shameless in public, and wandered the agora with a lit lantern in broad daylight claiming to search for a wise man - each gesture a rebuke to convention. He called himself a "citizen of the world," an early sketch of cosmopolitanism, and when Alexander the Great came to meet the famous beggar-philosopher, Diogenes asked only that the conqueror stop blocking his sun. He died around 324 or 321 BC, leaving no writings but countless anecdotes that made him antiquity's most quoted provocateur.