The 14th-century judge and historian who founded the study of society — reading power as group solidarity that hardens at the margins and rots in comfort.
She wrote Europe's most admired treatise on humane legislation, and in the same decade made it a flogging offence for a serf to complain about a master.
The ancient strategist who taught that the highest victory is the fight you never have to have.
Florence's secretary and diplomat, who wrote down how power actually works — and what republics need — after losing everything to it.