“The most dangerous man to any government is the man who is able to think things out for himself, without regard to the prevailing superstitions and taboos. Almost inevitably he comes to the conclusion that the government he lives under is dishonest, insane and intolerable, and so, if he is romantic, he tries to change it. And even if he is not romantic personally he is very apt to spread discontent among those who are.”

“A philosopher is a blind man in a dark room looking for a black cat that isn't there. A theologian is the man who finds it.”

“One of the most irrational of all the conventions of modern society is the one to the effect that religious opinions should be respected. …[This] convention protects them, and so they proceed with their blather unwhipped and almost unmolested, to the great damage of common sense and common decency. that they should have this immunity is an outrage. There is nothing in religious ideas, as a class, to lift them above other ideas. On the contrary, they are always dubious and often quite silly. Nor is there any visible intellectual dignity in theologians. Few of them know anything that is worth knowing, and not many of them are even honest.”

“I have often misunderstood men grossly, and I have misrepresented them when I understood them, sacrificing sense to make a phrase. Here, of course, is where even the most conscientious critic often goes aground; he is apt to be an artist before he is a scientist, and the impulse to create something passionately is stronger in him than the impulse to state something accurately.”

“Moral certainty is always a sign of cultural inferiority. The more uncivilized the man, the surer he is that he knows precisely what is right and what is wrong. All human progress, even in morals, has been the work of men who have doubted the current moral values, not of men who have whooped them up and tried to enforce them. The truly civilized man is always skeptical and tolerant, in this field as in all others. His culture is based on "I am not too sure.”

“Self-respect--the secure feeling that no one, as yet, is suspicious.”

“Every great wave of popular passion that rolls up on the prairies is dashed to spray when it strikes the hard rocks of Manhattan.”

“New York: A third-rate Babylon.”

“Immortality is the condition of a dead man who doesn’t believe he is dead.”

“A poet more than thirty years old is simply an overgrown child.”

“The notion that a radical is one who hates his country is naïve and usually idiotic. He is, more likely, one who likes his country more than the rest of us, and is thus more disturbed than the rest of us when he sees it debauched. He is not a bad citizen turning to crime; he is a good citizen driven to despair.”