“The individual must not merely wait and criticize, he must defend the cause the best he can. The fate of the world will be such as the world deserves.”

“We must be prepared to make the same heroic sacrifices for the cause of peace that we make ungrudgingly for the cause of war.”

“To get to know a country, you must have direct contact with the earth. It's futile to gaze at the world through a car window.”

“It is very difficult to explain this feeling to anyone who is entirely without it, especially as there is no anthropomorphic conception of God corresponding to it. The individual feels the nothingness of human desires and aims and the sublimity and marvelous order which reveal themselves both in Nature and in the world of though. He looks upon individual existence as a sort of prison and wants to experience the universe as a single significant whole.”

“Compound interest is the eighth wonder of the world. He who understands it, earns it ... he who doesn't ... pays it.”

“Is it not better for a man to die for a cause in which he believes, such as peace, than to suffer for a cause in which he does not believe, such as war?”

“Concern for man himself and his fate must always constitute the chief objective of all technological endeavors...in order that the creations of our mind shall be a blessing and not a curse to mankind. Never forget this in the midst of your diagrams and equations.”