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.

There are three musts that hold us back: "I must do well. You must treat me well. And the world must be easy." And I sometimes think that as long as we keep the second must, which is socially learned, then some screwballs 100 years from now will manufacture atomic bombs in their bathtub and maybe annihilate the whole human race because they demand that the rest of the world must agree with their dogmas. When we don't agree, they may zap us.

Lack of forgiveness of others breeds lack of self-forgiveness.

The attitude of unconditional self-acceptance is probably the most important variable in their long-term recovery.

You never truly need what you want. That is the main and thoroughgoing key to serenity.

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.

People don't just get upset. They contribute to their upsetness. They always have the power to think, and to think about their thinking, and to think about thinking about their thinking, which the goddamn dolphin, as far as we know, can't do. Therefore they have much greater ability to change themselves than any other animal has.