“Doctors put drugs of which they know little into bodies of which they know less for diseases of which they know nothing at all.”

“I know many books which have bored their readers, but I know of none which has done real evil.”

“I should like to know which is worse: to be ravished a hundred times by pirates, and have a buttock cut off, and run the gauntlet of the Bulgarians, and be flogged and hanged in an auto-da-fe, and be dissected, and have to row in a galley -- in short, to undergo all the miseries we have each of us suffered -- or simply to sit here and do nothing?'That is a hard question,' said Candide.”

“The more a man knows, the less he talks.”

“if Columbus in an island of America had not caught the disease, which poisons the source of generation, and often indeed prevents generation, we should not have chocolate and cochineal”

“There are truths which are not for all men, nor for all times.”

“The first step, my son, which one makes in the world, is the one on which depends the rest of our days.”