However inadequate our ideas of causal efficacy may be, we are less wide of the mark when we say that our ideas and feelings have it, than the Automatists are when they say they haven't it. As in the night all cats are gray, so in the darkness of metaphysical criticism all causes are obscure. But one has no right to pull the pall over the psychic half of the subject only . . . whilst in the same breath one dogmatizes about material causation as if Hume, Kant, and Lotze had never been born.

The ideas gained by men before they are twenty-five are practically the only ideas they shall have in their lives.

Faith is synonymous with working hypothesis.

True ideas are those that we can assimilate, validate, corroborate, and verify. False ideas are those that we cannot. That is the practical difference it makes to us to have true ideas; that therefore is the meaning of truth, for it is all that truth is known as.

The worst thing that can happen to a good teacher is to get a bad conscience about her profession because she feels herself hopeless as a psychologist.

The minute a man ceases to grow, no matter what his years, that minute he begins to be old.

Most people live, whether physically, intellectually or morally, in a very restricted circle of their potential being.