Desire, part of soul, 28, 169; thought without, gives no motive, 191; distinctions among, 224

Destruction, meaning of, 53

Dialectic, Parmenides founder of, 39; Zeno inventor of, 42; Platonic theory of, 164, 171

Dichotomy, invented by Zeno, 43

Difference (see Essence), all difference quantitative, 76; conditioned by dissimilarity in atoms, 77

Dilemma, Melissus' use of, 46

Diogenes, pupil of Antisthenes, 130

Dionysius, elder and younger, connection of Plato with, 135

Diotima, conversation of, with Socrates, 137

Dry light, 19