If people are failing, they look inept. If people are succeeding, they look strong and good and competent. That's the 'halo effect.' Your first impression of a thing sets up your subsequent beliefs. If the company looks inept to you, you may assume everything else they do is inept.

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

When you analyze happiness, it turns out that the way you spend your time is extremely important.

It's not a case of: 'Read this book and then you'll think differently. I've written this book, and I don't think differently.

Many ideas happen to us. We have intuition, we have feeling, we have emotion, all of that happens, we don't decide to do it. We don't control it.

There's a very good reason for why economics developed the way it did, and that is that in many situations, the assumption that people will exploit the opportunities available to them is very plausible, and it simplifies the analysis of how markets will behave.

Organizations may be better able to tame optimism than individuals are.