"As long as there are fools and rascals, there will be religions."

"Think for yourselves and let others enjoy the privilege to do so too."

"There is an astonishing imagination, even in the science of mathematics... We repeat, there was far more imagination in the head of Archimedes than in that of Homer."

"If God did not exist, it would be necessary to invent him."

"Judge of a man by his questions rather than by his answers."

"Now, now my good man, this is no time for making enemies."

"Self-reverence, self knowledge, self-control. These three alone lead life to sovereign power."

"Advice is the only commodity on the market where the supply always exceeds the demand."

"Loneliness is everything it's cracked up to be."

"Maturity consists in having rediscovered the seriousness one had as a child at play."

"Success is to be measured not so much by the position that one has reached in life as by the obstacles which he has overcome."

"Put up with it and you will get more of it."