“Everything existing in the universe is the fruit of chance and necessity.”

“Nothing exists except atoms and empty space; everything else is opinion.”

“One will seem to promote virtue better by using encouragement and persuasion of speech than law and necessity. For it is likely that he who is held back from wrongdoing by law will err in secret but that he who is urged to what he should by persuasion will do nothing wrong either in secret or openly. Therefore he who acts rightly from understanding and knowledge proves to be at the same time courageous and right-minded.”

“By desiring little, a poor man makes himself rich.”

“No power and no treasure can outweigh the extension of our knowledge.”

“It is greed to do all the talking but not to want to listen at all.”

“Good means not merely not to do wrong, but rather not to desire to do wrong.”