"We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge can give us so much power."

"I would never die for my beliefs because I might be wrong."

"The time you enjoy wasting is not wasted time."

"One of the symptoms of an approaching nervous breakdown is the belief that one's work is terribly important."

"To fear love is to fear life, and those who fear life are already three parts dead."

"This is one of those views which are so absolutely absurd that only very learned men could possibly adopt them."

"To each mortal peradventure earth becomes a new machine."

"When bad men combine, the good must associate; else they will fall, one by one, an unpitied sacrifice in a contemptible struggle."

"I don't like to think of laws as rules you have to follow, but more as suggestions."

"What we call progress is the exchange of one nuisance for another nuisance."

"The punishment which the wise suffer who refuse to take part in the government is to live under the government of worse men."

"Only as you do know yourself can your brain serve you as a sharp and efficient tool. Know your own failings, passions, and prejudices so you can separate them from what you see."