“Man is so intelligent that he feels impelled to invent theories to account for what happens in the world. Unfortunately, he is not quite intelligent enough, in most cases, to find correct explanations. So that when he acts on his theories, he behaves very often like a lunatic.”

“He is a man of intelligence, but to act sensibly, intelligence is not enough.”

“ Man, by his very nature, tends to give himself an explanation of the world into which he is born. And this is what distinguishes him from the other species. Every individual, even the least intelligent, the lowest of outcasts, from childhood on gives himself some explanation of the world. And with it he manages to live. And without it, he would sink into madness.”

“In his blackest hours, Stone doubted the utility of all thought, and all intelligence. There were times he envied the laboratory rats he worked with; their brains were so simple. Certainly, they did not have the intelligence to destroy themselves; that was a peculiar invention of man.”

“Very simple was my explanation, and plausible enough---as most wrong theories are!”

“a man is not really convinced of a philosophic theory when he finds that something proves it. He is only really convinced when he finds that everything proves it.”