A selection of brief life lessons by Nobel prize-winning psychologist, Daniel, Kahneman.

Human beings cannot comprehend  very large or very small numbers. It would be useful for us to acknowledge that fact.

My main work has concerned judgment and decision-making . But I never felt I was studying the stupidity of mankind in the third person. I always felt I was studying my own mistakes.

Happiness is complicated. There are two components. One is strongly genetic; the second is a question of how you feel at any moment. I am pretty content, but I had a very pessimistic mother, and I’ve always been known as a pessimist.