Areopagus, "Mars Hill," a spur of the Acropolis, seat of the highest court of Athens; the court itself, with powers of senate and supreme court, reorganized and enlarged in function by Solon, [i, 75].

Arginusae, a group of islands off the coast of Asia Minor, near Lesbos, scene of the victory of the Athenian fleet (406), [i, 84].

Argos, the chief city of Argolis, [ii, 81].

Aristides, "the Just," [iii, [16], [49], [87]; fought at Marathon (490), Salamis (480), and commanded the Athenians at Plataea (479); exiled (483) because his policies clashed with those of Themistocles.

[Aristippus], of Cyrene (flourished 370), founder of the Cyrenaic school, [iii, 116]; disciple of Socrates, but taught that the chief end of man was to get enjoyment from everything (hedonism), to subject all things and circumstances to himself for pleasure; but pleasure must be the slave not the master; good and bad identical with pleasure and pain; [i, 148].

Aristo, of Chios (3rd century), a Stoic philosopher, pupil of Zeno; he taught indifference to externals, nothing good but virtue, nothing evil but vice; his theories rejected, [i, 6].

[Aristotle] (385-322), disciple of Plato and teacher of Alexander the Great; founder of the Peripatetic school; greatest of philosophers, master of all knowledge—physics, metaphysics, natural philosophy, ethics, politics, poetics, sociology, logic, rhetoric, etc.; [ii, 56]; [iii, 35]; might have been a great orator, [i, 4].

Arpinates, the people of Arpinum, owners of public lands, [i, 21].

Arpinum, a town in Latium, birthplace of Cicero and Gaius Marius, [i, 21].

Athenians, the people of Athens, [i, 75], [84]; their cruel subjugation of Aegina, [iii, 46]; left their homes to fight at Salamis, [iii, 48]; political strife, [i, 86]; high moral principles of, [iii, 49], [55.]