Every claim creates an obligation.

The first lecture in psychology that I ever heard was the first I ever gave.

Out of time we cut 'days' and 'nights', 'summers' and 'winters.' We say what, each part of the sensible continuum is, and all these abstract whats are concepts. The intelletual life of man consists almost wholly in his substitution of a conceptual order for the persceptual order in which his experience originally comes.

Truth happens to an idea. It becomes true, is made true by events. Its verity is in fact an event, a process: the process namely of its verifying itself, its veri-fication. Its validity is the process of its valid-ation.

Every sort of energy and endurance, of courage and capacity for handling life's evils, is set free in those who have religious faith.

A winner's attitude: it may be difficult, but it's possible. A loser's attitude: It may be possible, but it's too difficult.

The one who thinks over his experiences most, and weaves them into systematic relations with each other, will be the one with the best memory.