Abdera, birthplace of Democritus, 74; of Protagoras, 86

Absolute knowledge, unattainable by man, 19; absorption in, 133; no
separate existence, 182

Abstract ideas not derivable from experience, 45; abstract truth
impossible, 87; of no value, 132; revival of, 133

Academus, grove of, 135

Achilles and tortoise, 44; death of, 139

Acroatic, kind of lectures, 175

Actuality, see _Realisation_.

Agrigentum, birthplace of Empedocles, 59

Air, beginning of things, 14

Alcestis, referred to, 139

Alcibiades, dialogue, 137

Alexander, relations with Aristotle, 174; influence of conquests of, 242

Anarchy, in politics and in philosophy, 83; reaction against, by
Socrates, 102

Anaxagoras, 52; relation of Empedocles to, 62; quoted by Aristotle, 200

Anaximander, 7

Anaximenes, 14

Anthropomorphism, criticised, 32

Antigonus, friend of Zeno, 229

Antisthenes, 128

Apology, dialogue, 136

Appetite, the only reality, 96

Archilochus, criticised by Heraclitus, 16

Aristippus, 124

Aristocracy, in politics and in philosophy, 82

Aristotle, on Thales, 4; on Xenophanes, 32; on Zeno, 42; on Melissus,
47; on Anaxagoras, 54; on Empedocles, 59, 63, 70; a complete Socratic,
103; on Socrates, 106; on Sophists, 115; debt to Plato, 159; on Plato,
163; chapters on, 172 _sqq._; his fresh contributions to Academic
philosophy, 173; two classes of lectures, 175; library, _ib._;
predominance of, 176; style, 177; differences from Plato, 178

Art, a greater revealer than science, 66; relation of Love to, 137; a
mode of creation, 139

Asceticism, of Cynics, 128; of Plato, 168; of Epicurus, 225

Atarneus, residence of Aristotle, 174

Athens, visited by Parmenides and Zeno, 34, 42, 157; residence of
Anaxagoras, 52; centre of sophistry, 85; birthplace of Socrates, 103;
visited by Aristippus, 124; birthplace of Antisthenes, 129; and of
Plato, 134; dialogue in praise of, 137; residence of Aristotle, 173; of
Epicurus, 211

Atlantis, kingdom of, 153

Atomists, 52; revived theory of, 215

Atoms, constituents of nature, 76, 216; deviation of, 216

Beauty, one aspect of ideal, 110; relation to creative instinct, 139;
science of universal beauty, 141

Becoming, the fundamental principle, 16; passage from Being to, 36, 39

Beginning (_arche_), of Thales, 3; Aristotle's definition, 4;
difficulties of material theories of, 36l

Being, eternal being like a sphere, 32; passage from, to Becoming, 36,
39; a co-equ