There is only one universal passion fear.

Even if animal experimentation was proved to be of value, it would be morally wrong.

Seemingly unreasonable people attempt to adapt the world to themselves. Much progress, therefore, depends on such people.

Love is a gross exaggeration of the difference between one person and everybody else.

The sex illusion is not a fixed quantity: not what mathematicians call a constant. It varies from zero in my wife's case to madness in that of our stepsister.

As I write, there is a craze for what is called psychoanalysis, or the cure of diseases by explaining to the patient what is the matter with him: an excellent plan if you happen to know what is the matter with him, especially when the explanation is that there is nothing the matter with him.

I have to live for others and not for myself: that's middle-class morality.