The Golden Age of Athens
For a few decades under the statesman Pericles, Athens produced an outpouring of achievement rarely matched: the Parthenon rose on the Acropolis, Sophocles and Euripides staged the first great dramas, Socrates questioned everything, and citizens governed themselves directly. Much of it was funded by tribute from an Athenian empire dressed up as an alliance. The glory and the overreach were inseparable — the same imperial confidence that built the Parthenon would soon drag Athens into a ruinous war it could not win.
A belief system rises, spreads, institutionalizes, and then schisms — changing the rules people accept as legitimate.