"I am not fond of arguments, because they are generally productive of more heat than light."

"Argument is the worst of all instruments for the discovery of truth."

"It is an old maxim, that a wise man may change his mind, a fool never."

"Gold defiles with frequent touch; There's nothing fouls the hand so much."

"When a true genius appears in the world, you may know him by this sign, that the dunces are all in confederacy against him."