“The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.”

“We are all geniuses up to the age of ten.”

“But the nature of the universe is such that the ends never justify the means. On the contrary, the means always determine the end.”

“A child-like man is not a man whose development has been arrested; on the contrary, he is a man who has given himself a chance of continuing to develop long after most adults have muffled themselves in the cocoon of middle-aged habit and convention.”

“Our epoch has been give many nicknames--the Age of Anxiety, the Atomic Age, the Space Age. It might, with equally good reason, be called the Age of Television Addiction, the Age of Soap Opera, the Age of the Disk Jockey.”

“A majority of young people seem to develop mental arteriosclerosis forty years before they get the physical kind. Another question: why do some people remain open and elastic into extreme old age, whereas others become rigid and unproductive before they're fifty?”

“Moral education, which ought never, in any circumstances, to be rational.”