“As a rule of thumb I say, if Socrates, Jesus and Tolstoy wouldn't do it, don't.”
“The rule of thumb in student files seemed to be, "If you have nothing negative to say, don't say anything at all.”
“The ideas I stand for are not mine. I borrowed them from Socrates. I swiped them from Chesterfield. I stole them from Jesus. And I put them in a book. If you don't like their rules, whose would you use?”
“...if I do not introduce people to Jesus, then I don't believe Jesus is an important person. It doesn't matter what I say.”
“I have learned, as a rule of thumb, never to ask whether you can do something. Say, instead, that you are doing it. Then fasten your seat belt. The most remarkable things follow.”
“Never trust a man who carries a handkerchief, I always say. One of many prejudicial rules of thumb.”