Science must not impose any philosophy, any more than the telephone must tell us what to say.

It is one thing to describe an interview with a gorgon or a griffin, a creature who does not exist. It is another thing to discover that the rhinoceros does exist and then take pleasure in the fact that he looks as if he didn't.

Tolerance is the virtue of those who don't believe anything.

If Christianity should happen to be true - that is to say, if its God is the real God of the universe - then defending it may mean talking about anything and everything.

It is not greedy to enjoy a good dinner, any more than it is to enjoy a good concert. But I do think there is something greedy about trying to enjoy the dinner and the concert at the same time.

The sort of man who admires Italian art while despising Italian religion is a tourist and a cad.

Your offer," he said, "is far too idiotic to be declined.