First Edition THE NEW YORK TIMES BESTSELLER I once began a list of the contradictory notions I hold: Look before you leap. He who hesitates is lost. Two heads are better than one. If you want something done right, do it yourself. Nothing ventured, nothing gained. Better safe than sorry. Out of sight, out of mind. Absence makes the heart grow fonder. You can't tell a book by its cover. Clothes make the man. Many hands make light work. Too many cooks spoil the broth. You can't teach an old dog new tricks. It's never too late to learn. Never sweat the small stuff. God is in the details. And so on. The list goes on forever. Once I got so caught up in this kind of thinking that I wore two buttons on my smock when I was teaching art. One said, "Trust me, I'm a teacher." The other replied, "Question Authority."