Failure doesn't have anything to do with your intrinsic value as a person.

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.

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.

I had a great many sex and love cases where people were absolutely devastated when somebody with whom they were compulsively in love didn't love them back. They were killing themselves with anxiety and depression.

Thinking rationally is often different from "positive thinking," in that it is a realistic assessment of the situation, with a view towards rectifying the problem if possible.

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

Whenever you avoid alarming situations, you almost always increase your anxiety about them.