When I was 16 I started keeping a diary in which I recorded my disagreements with the famous philosophers. I didn't insist that they were wrong, that I was right and I had to prevail. I just agreed and disagreed with them. I thought there was a high degree of probability that I was right and some other thinkers were wrong. But I wasn't positive about it.

I had used eclectic therapy and behavior therapy on myself at the age of 19 to get over my fear of public speaking and of approaching young women in public.

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

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

Freud had a gene for inefficiency, and I think I have a gene for efficiency.

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.

The goal of all life is to have a ball.