“If you your lips would keep from slips,Five things observe with care;To whom you speak, of whom you speakAnd how, and when, and where.”

“If wisdom’s ways you wisely seek,Five things observe with care,To whom you speak,Of whom you speak,And how, and when, and where.”

“You are the same today that you are going to be five years from now except for two things: the people with whom you associate and the books you read.”

“Do you suppose that it is within your power to insult me? You evidently are not aware to whom you are speaking? Do you imagine that the envenomed spittle of five hundred little gentlemen of your type, heaped one upon another, would succeed in slobbering so much as the tips of my august toes?”

“Never close your lips to those whom you have already opened your heart.”

“If you must take care that your opinions do not differ in the least from those of the person with whom you are talking, you might just as well be alone.”