“Most of the trouble in this world has been caused by folks who can't mind their own business, because they have no business of their own to mind, any more than a smallpox virus has.”

“The aim of education is the knowledge, not of facts, but of values.”

“Desperation is the raw material of drastic change. Only those who can leave behind everything they have ever believed in can hope to escape.”

“Your mind will answer most questions if you learn to relax and wait for the answer.”

“Like all pure creatures, cats are practical.”

“Man is an artifact designed for space travel. He is not designed to remain in his present biologic state any more than a tadpole is designed to remain a tadpole.”