“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.”

“But the cruelest habit the modern prophecy-savans have, is that one of coolly and arbitrarily fitting the prophetic shirt on to the wrong man. They do it without regard to rhyme or reason.”

“We may say, in a broad way, that Greek philosophy down to Aristotle expresses the mentality appropriate to the City State; that Stoicism is appropriate to a cosmopolitan despotism; that stochastic philosophy is an intellectual expression of the Church as an organization; that philosophy since Descartes, or at any rate since Locke, tends to embody the prejudices of the commercial middle class; and that Marxism and Fascism are the philosophies appropriate to the modern industrial state.”

“You can get used to eating breakfast with a man in a fedora. You can get used to anything, my mother was in the habit of saying.”

“I never considered a difference of opinion in politics, in religion, in philosophy, as cause for withdrawing from a friend.”

“My philosophy: find what it is you want to say, walk in the room, say it, and get the hell out.”