We help other people because we can, or because it makes us feel good, not because we're counting on some future payback. There is a word for this; love.

Don't forget that Mozart worked on commission. He almost always would write something if he knew exactly who was paying for it and where it would be performed. So you can't really separate the creation of genius from the appreciation of it.

Part of positive psychology is about being positive, but sometimes laughter and clowns are not appropriate. Some people don't want to be happy, and that's okay. They want meaningful lives, and those are not always the same as happy lives.

The word "utopia" has two meanings. It means both "good place" and "nowhere". That's the way it should be. The happiest places, I think, are the ones that reside just this side of paradise. The perfect person would be insufferable to live with; likewise, we wouldn't want to live in the perfect place, either. "A life time of happiness! No man could bear it: It would be hell on earth," wrote George Bernard Shaw, in his play Man and Superman.

I've always believed that happiness is just around the corner. The trick is fining the right corner.

We are shaped not only by our current geography but by our ancestral one as well. Americans, for instance, retain a frontier spirit even though the only frontier that remains is that vast open space between the SUV and strip mall. We are our past.

If you walk into a coffee shop in 1903 Vienna, you might find at the same table the artist Gustav Klimt, Sigmund Freud, Leon Trotsky and possibly Adolf Hitler, who lived in Vienna at the same time.