“I never think of the future - it comes soon enough.”

“I would not think that philosophy and reason themselves will be man's guide in the foreseeable future; however, they will remain the most beautiful sanctuary they have always been for the select few.”

“I do not believe that civilization will be wiped out in a war fought with the atomic bomb. Perhaps two-thirds of the people of the Earth might be killed, but enough men capable of thinking, and enough books, would be left to start again, and civilization could be restored.”

“I never made one of my discoveries through the process of rational thinking”

“When I examine myself and my methods of thought, I come to the conclusion that the gift of fantasy has meant more to me than any talent for abstract, positive thinking.”

“If tomorrow were never to come, it would not be worth living today.”

“Life is a preparation for the future; and the best preparation for the future is to live as if there were none.”