The emotionally mature individual should completely accept the fact that we live in a world of probability and chance, where there are not, nor probably ever will be, any absolute certainties, and should realize that it is not at all horrible, indeed—such a probabilistic, uncertain world.

Spirit and soul is horseshit of the worst sort. Obviously there are no fairies, no Santa Clauses, no spirits. What there is, is human goals and purposes as noted by sane existentialists. But a lot of transcendentalists are utter screwballs.

Many psychoanalysts refused to let me speak at their meetings. They were exceptionally vigorous because I had previously been an analyst and they were very angry at my flying the coop.

The art of love is largely the art of persistence.

If I had been a member of the academic establishment, I could have done other experiments.

I'm one of the best-loved psychologists in the United States, but I'm also probably the most hated one.

As a matter of fact, as a result of my philosophy, I wasn't even upset about Hitler. I was willing to go to war to knock him off, but I didn't hate him. I hated what he was doing.