The modern habit of saying "This is my opinion, but I may be wrong" is entirely irrational. If I say that it may be wrong, I say that is not my opinion. The modern habit of saying "Every man has a different philosophy; this is my philosophy and it suits me" – the habit of saying this is mere weak-mindedness. A cosmic philosophy is not constructed to fit a man; a cosmic philosophy is constructed to fit a cosmos. A man can no more possess a private religion than he can possess a private sun and moon.

Truths turn into dogmas the minute they are disputed.

I have formed a very clear conception of patriotism. I have generally found it thrust into the foreground by some fellow who has something to hide in the background. I have seen a great deal of patriotism; and I have generally found it the last refuge of the scoundrel.

Gratitude is happiness doubled by wonder.

An almost unnatural vigilance is really required of the citizen because of the horrible rapidity with which human institutions grow old.

It was the mystical dogma of Bentham and Adam Smith and the rest, that some of the worst of human passions would turn out to be all for the best. It was the mysterious doctrine that selfishness would do the work of unselfishness.

There are arguments for atheism, and they do not depend, and never did depend, upon science. They are arguable enough, as far as they go, upon a general survey of life; only it happens to be a superficial survey of life.