Political correctness does not legislate tolerance; it only organizes hatred.

A culture may be conceived as a network of beliefs and purposes in which any string in the net pulls and is pulled by the others,thus perpetually changing the configuration of the whole. If the cultural element called morals takes on a new shape, we must ask what other strings have pulled it out of line. It cannot be one solitary string, nor even the strings nearby, for the network is three-dimensional at least.

Out of man's mind in free play comes the creation Science. It renews itself, like the generations, thanks to an activity which is the best game of homo ludens: science is in the strictest and best sense a glorious entertainment.

Science is, in the best and strictest sense, glorious entertainment

Above all, the ability to feel the force of an argument apart from the substance it deals with is the strongest weapon against prejudice.

I'll read, and then I'll take naps. When I feel sleep coming on, I give in and don't fight it.

Tennis belongs to the individualistic past - a hero, or at most a pair of friends or lovers, against the world.