“Childishness comes almost as naturally to a man as to a child”

“It was childish to feel disappointed, but childishness comes almost as naturally to a man as to a child.”

“Imagine the people who believe such things and who are not ashamed to ignore, totally, all the patient findings of thinking minds through all the centuries since the Bible was written. And it is these ignorant people, the most uneducated, the most unimaginative, the most unthinking among us, who would make themselves the guides and leaders of us all; who would force their feeble and childish beliefs on us; who would invade our schools and libraries and homes. I personally resent it bitterly.”

“Now any dogma, based primarily on faith and emotionalism, is a dangerous weapon to use on others, since it is almost impossible to guarantee that the weapon will never be turned on the user.”

“Naturally, there's got to be a limit for I don't expect to live forever, but I do intend to hang on as long as possible.”

“Scientist are human. Unraveling the knots of Nature's mysteries is a reward in itself; but even so, scientists like to hear the applause of the audience”

“Galaxy! When can a man know he is not a puppet? How can a man know he is not a puppet?”