You sit at the board and suddenly your heart leaps. Your hand trembles to pick up the piece and move it. But what chess teaches you is that you must sit there calmly and think about whether it's really a good idea and whether there are other, better ideas.

Everybody has their black moments.

Like the man said, can happiness buy money?

Be suspicious of people who have, or crave, power. Never, ever go near power. Don't become friends with anyone who has real power. It's dangerous.

I think the big mistake in schools is trying to teach children anything, and by using fear as the basic motivation. Fear of getting failing grades, fear of not staying with your class, etc. Interest can produce learning on a scale compared to fear as a nuclear explosion to a firecracker.

In any case, once you're dealing on a nonverbal level, ambiguity is unavoidable. But it's the ambiguity of all art, of a fine piece of music or a painting - you don't need written instructions by the composer or painter accompanying such works to 'explain' them. “Explaining” them contributes nothing but a superficial 'cultural' value which has no value except for critics and teachers who have to earn a living.

If you can talk brilliantly about a problem, it can create the consoling illusion that it has been mastered.