In the matter of belief, we are all extreme conservatives.

The essence of genius is to know what to overlook.

The pragmatist turns away from abstraction and insufficiency, from verbal solutions, from bad a priori reasons, from fixed principles, closed systems, and pretended absolutes and origins. He turns toward concreteness and adequacy, towards facts, towards action, and towards power.

All the higher, more penetrating ideals are revolutionary. They present themselves far less in the guise of effects of past experience than in that of probable causes of future experience, factors to which the environment and the lessons it has so far taught us must learn to bend.

If this life is not a real fight, in which something is eternally gained for the universe by success, it is no better than a game of private theatricals from which one may withdraw at will. But it feels like a real fight.

True ideas are those that we can assimilate, validate, corroborate, and verify. False ideas are those that we cannot

It is only the fundamental conceptions of psychology which are of real value to a teacher.