The Eugenic Society . . . is perpetually bewailing the fact that wage-earners breed faster than middle-class people.

Philosophy seems to me on the whole a rather hopeless business.

Any philosophy worth taking seriously would have to be built upon a firm foundation of unyielding despair.

Do not feel envious of the happiness of those who live in a fool's paradise, for only a fool will think that is happiness.

Dogma demands authority, rather than intelligent thought, as the source of opinion; it requires persecution of heretics and hostility to unbelievers; it asks of its disciples that they should inhibit natural kindliness in favor of systematic hatred.

Only mathematics and mathematical logic can say as little as the physicist means to say.

When the intensity of emotional conviction subsides, a man who is in the habit of reasoning will search for logical grounds in favour of the belief which he finds in himself.