"The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt."

"Mathematics, rightly viewed, possesses not only truth, but supreme beauty — a beauty cold and austere, like that of sculpture, without appeal to any part of our weaker nature, without the gorgeous tra…"

"Our nominal morality has been formulated by priests and mentally enslaved women. It is time that men who have to take a normal part in the normal life of the world learned to rebel against this sickly…"

"If we were all given by magic the power to read each other's thoughts, I suppose the first effect would be almost all friendships would be dissolved; the second effect, however, might be excellent, fo…"

"It is possible that mankind is on the threshold of a golden age; but, if so, it will be necessary to kill off nine-tenths of the present population."