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