"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."

“Why assume so glibly that the God who presumably created the universe is still running it? It is certainly perfectly conceivable that He may have finished it and then turned it over to lesser gods to operate. In the same way many human institutions are turned over to grossly inferior men. This is true, for example, of most universities, and of all great newspapers.”

“In every unbeliever's heart there is an uneasy feeling that, after all, he may awake after death and find himself immortal. This is his punishment for his unbelief. This is the agnostic's Hell.”

“Men in the mass never brook the destructive discussion of their fundamental beliefs, and that impatience is naturally most evident in those societies in which men in the mass are most influential. Democracy and free speech are not facets of one gem; democracy and free speech are eternal enemies.”

“Socialism is the theory that the desire of one man to get something he hasn't got is more pleasing to a just God than the desire of some other man to keep what he has got.”

“The majority of men prefer delusion to truth. It soothes. It is easy to grasp. Above all, it fits more snugly than the truth into a universe of false appearances—of complex and irrational phenomena, defectively grasped.”

“To be in love is merely to be in a state of perpetual anesthesia — to mistake an ordinary young man for a Greek god or an ordinary young woman for a goddess.”