“The man who is always waving the flag usually waives what it stands for.”

“The man who says he is willing to meet you halfway is usually a poor judge of distance.”

“A pessimist is a man who looks both ways when he crosses the street.”

“A man doesn't know what he knows until he knows what he doesn't know.”

“There are two kinds of failures: those who thought and never did, and those who did and never thought”

“Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.”

“An intelligence test sometimes shows a man how smart he would have been not to have taken it.”