“If one listens one may be convinced; and a man who allows himself to be convinced by an argument is a thoroughly unreasonable person”

“The fatal errors of life are not due to man's being unreasonable: an unreasonable moment may be one's finest moment. They are due to man's being logical.”

“Arguments are to be avoided, they are always vulgar and often convincing.”

“I dislike arguments of any kind. They are always vulgar and often convincing.”

“It is so easy to convince others; it is so difficult to convince oneself.”

“A man who takes himself too seriously will find that no one else takes him seriously.”

“The one person who has more illusions than the dreamer is the man of action.”