"I am returning this otherwise good typing paper to you because someone has printed gibberish all over it and put your name at the top."

"It is impossible to defeat an ignorant man in argument."

"Don't reserve your best behavior for special occasions. You can't have two sets of manners, two social codes - one for those you admire and want to impress, another for those whom you consider unimportant. You must be the same to all people."