“There is only one thing that can never go past a certain point in its alliance with oppression--and that is orthodoxy. I may, it is true, twist orthodoxy so as partly to justify a tyrant. But I can easily make up a German philosophy to justify him entirely.”

“People have fallen into a foolish habit of speaking of orthodoxy as something heavy, humdrum, and safe. There never was anything so perilous or so exciting as orthodoxy. It was sanity: and to be sane is more dramatic than to be mad.”

“I did try to found a little heresy of my own; and when I had put the last touches to it, I discovered that it was orthodoxy.”

“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.”

“The word 'heresy' not only means no longer being wrong; it practically means being clear-headed and courageous. The word 'orthodoxy' not only no longer means being right; it practically means being wrong.”

“Man is an exception, whatever else he is. If he is not the image of God, then he is a disease of the dust. If it is not true that a divine being fell, then we can only say that one of the animals went entirely off its head.”

“Is it possible that God says every morning, "Do it again" to the sun; and every evening "Do it again" to the moon." from Orthodoxy.”