Those three things - autonomy, complexity, and a connection between effort and reward - are, most people will agree, the three qualities that work has to have if it is to be satisfying.

My earliest memories of my father are of seeing him work at his desk and realizing that he was happy. I did not know it then, but that was one of the most precious gifts a father can give his child.

What do we tell our children? Haste makes waste. Look before you leap. Stop and think. Don't judge a book by its cover. We believe that we are always better off gathering as much information as possible and spending as much time as possible in deliberation.

Emotion is contagious.

The iPod is clearly a tipping point (and I'm not quite sure it is a wholly positive development), because it is a revolution in the way that we consume creative property, which I would call art. It has radically changed the relationship between the artist and the audience, how money changes hands, and how much money changes hands. Music was the first, and books are coming next. The Kindle or some form of electronic book is clearly inevitable, and it will massively reshape how books are sold, who pays for them, and how they're consumed. It is going to be really fascinating.

Often a sign of expertise is noticing what doesn't happen.

You don't manage a social wrong. You should be ending it.