sympathy of his philosophy with Christianity, 268:
followed the philosophic method of Socrates, 328;
his moral qualifications for the study of philosophy, 328, 329;
his literary qualifications, 329, 330;
his search after a criterion of truth, 333, 334;
his doctrine of Ideas, 334-337;
his science of real knowledge, 337, 338;
his answer to the question, What is Science? 338, 339;
his Psychology 339-352;
his scheme of the intellectual powers, 345;
on the nature of the soul, 350;
his dialectic, 353-369;
his grand scheme of ideas, 364-367;
his Ontology, 369-379;
on the creation of time, 372;
did he teach that matter is eternal? 371, 372;
on the eternity of the rational element of the soul, 373-375;
on the immortality of the soul, 375, 376;
on God as the First Principle of all principles, 377-379;
his Physics, 380-383;
his Ethics, 383-387, 502-505;
defects of his
ethical system, 518;
his philosophy not derived from Jewish sources, 476;
felt the need of a superhuman deliverer from sin and guilt,
519-521.

Plutarch, his sketches of Athenian character, 44;
criticism on, 45;
on the universality of prayer and sacrifice, 115.

Poets, the Greek, believed in the existence of one uncreated Mind,
141;
their theogony was a cosmogony, 142;
the theologians of Greece, 274, 275.

Polytheism, Greek, a poetico-historical religion of myth and
symbol, 134;
its immoralities, 160, 161;
undermined by Philosophy, 484-487.

Post-Socratic Schools, classification of, 425;
a philosophy of life, 422-424.

Potentiality and Actuality, Aristotle on, 408-412.

Prayer, natural to man, 115.

Preparation for Christianity, not confined to Judaism alone,
464, 465;
Greek civilization also prepared the way for Christ, 465-468;
Greek language a providential development as the vehicle of a
more perfect revelation, 468-470;
Greek philosophy fulfilled a propaedeutic office, 470-472.

Pre-Socratic Schools, classification of, 280-282; 295, 296.

Principles, _universal and necessary_, how attained by the method
of Plato, 361-364, 390;
how, by the method of Aristotle, 390-394, 402, 403.

Psychological analysis, logic