“Publish and be damned.”

“The fact is that the average man's love of liberty is nine-tenths imaginary, exactly like his love of sense, justice and truth.”

“Genius: the ability to prolong one's childhood.”

“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.”

“The central belief of every moron is that he is the victim of a mysterious conspiracy against his common rights and true deserts.”

“School days, I believe, are the unhappiest in the whole span of human existence. They are full of dull, unintelligible tasks, new and unpleasant ordinances, brutal violations of common sense and common decency. It doesn't take a reasonably bright boy long to discover that most of what is rammed into him is nonsense, and that no one really cares very much whether he learns it or not.”

“To sum up: 1. The cosmos is a gigantic fly-wheel making 10,000 revolutions a minute. 2. Man is a sick fly taking a dizzy ride on it. 3. Religion is the theory that the wheel was designed and set spinning to give him the ride.”