The human race's prospects of survival were considerably better when we were defenceless against tigers than they are today when we have become defenceless against ourselves.

Civilizations die from suicide, not by murder.

We shall have to share out the fruits of technology among the whole of mankind. The notion that the direct and immediate producers of the fruits of technology have a proprietary right to these fruits will have to be forgotten. After all, who is the producer? Man is a social animal, and the immediate producer has been helped to produce by the whole structure of society, beginning with his own education.

History not used is nothing, for all intellectual life is action, like practical life, and if you don't use the stuff - well, it might as well be dead.

Civilizations, I believe, come to birth and proceed to grow by successfully responding to successive challenges. They break down and go to pieces if and when a challenge confronts them that they fail to meet.

The aim of all education is, or should be, to teach people to educate themselves.

The equation of religion with belief is rather recent.