The teaching of Christ, as it appears in the Gospels, has had extraordinarily little to do with the ethics of Christians.

The use of force stands in need of control by a public neutral authority, in the interests of liberty no less than of justice. Within a nation, this public authority will naturally be the state; in relations between nations, if the present anarchy is to cease, it will have to be some international parliament.

Our great democracies still tend to think that a stupid man is more likely to be honest than a clever man.

The time you enjoy wasting is not wasted time.

Mysticism is, in essence, little more than a certain intensity and depth of feeling in regard to what is believed about the universe.

The moral thing I should wish to say to them is very simple; I should say: "Love is wise - Hatred is foolish." In this world, which is getting more and more closely interconnected, we have to learn to tolerate each other.

At the age of eleven, I began Euclid, with my brother as my tutor. This was one of the great events of my life, as dazzling as first love. I had not imagined there was anything so delicious in the world. From that moment until I was thirty-eight, mathematics was my chief interest and my chief source of happiness.