Some theories are good for nothing except to be argued about.

Many a man who is willing to be shot for his belief in a miracle would have doubted, had he been present at the miracle itself.

It is astonishing how much the word infinitely is misused: everything is infinitely more beautiful, infinitely better, etc. The concept must have something pleasing about it, or its misuse could not have become so general.

We cannot remember too often that when we observe nature, and especially the ordering of nature, it is always ourselves alone we are observing.

Every man has his moral backside which he refrains from showing unless he has to and keeps covered as long as possible with the trousers of decorum.

It is a sure evidence of a good book if it pleases us more and more as we grow older.

I have remarked very clearly that I am often of one opinion when I am lying down and of another when I am standing up.