Humanity, fundamental ideas and laws of, 18; developed and modified by exterior conditions, 19; the most favorable conditions existed in Athens.

I.

Idealism, furnishes no adequate explanation of the common belief in an external world, 193,199--and of a personal self, 200-202; Cosmothetic Idealism, 305; absolute Idealism, 305.

Ideas, Platonic doctrine of, 334-337; Platonic scheme of, 364-367.

Images of the gods, how regarded by Cicero, 129--by Plutarch, 129; the heathens apologized for the use of images, 159.

Immortality of the soul, taught by Socrates, 324--and by Plato, 375, 376; denied by Epicurus, 444-446.

Incarnation, the idea of, not unfamiliar to heathen thought, 512.

Induction, the psychological method of Plato, 356, 357.

Induction and Deduction, Aristotle on, 397, 398.

Infinite, the, not a mere negation of thought, 242-244; known as the necessary correlative of the finite, 245; as comprehensible in itself, as the finite is comprehensible in itself, 246; in what sense known, 252.