Species, has more of existence than genus, 183

Speusippus, successor of Plato, 172

Stagira, birthplace of Aristotle, 172

State, Justice writ large in, 147; classes in, 169; an entelechy, 196

Statesman (or Politicus), dialogue, 159

Stoicism, Semitic element in, 228; origin of name, 229

Strife, original of things, 17; one of two principles, 38, 63

Substance defined, 203

Sulla, brought Aristotle's library to Rome, 176

Summum bonum, what? 156; relation of man's perfection, 168; philosophy search for, 229