A 45-year old looks a lot like a 25-year old who's been out all night. And feels just as good about having survived the experience.

Be able to keep a secret or promise when you know in your heart that it is the right thing to do.

Be able to go shopping for a bathing suit and not become depressed afterward.

The chess player who develops the ability to play two dozen boards at a time will benefit from learning to compress his or her analysis into less time.

The length of your education is less important than its breadth, and the length of your life is less important than its depth.

Suppose you're on a game show, and you're given the choice of three doors. Behind one door is a car, the others, goats. You pick a door, say #1, and the host, who knows what's behind the doors, opens another door, say #3, which has a goat. He says to you: 'Do you want to pick door #2?' Is it to your advantage to switch your choice of doors?

It is a lot easier to prove that you don't love someone than it is to prove that you do, but one of the best 'proofs' I know is the desire to devote time to the person with no expectation of any sort of compensation, including gratitude, in return.