Nobody would say, 'I'm voting for this guy because he's got the stronger chin,' but that, in fact, is partly what happens.

People should be conscious of the large contribution made by anything that gets people together easily in the reduction of loneliness and emotional well-being.

To better avoid errors, you should talk to people who disagree with you and you should talk to people who are not in the same emotional situation you are.

We are often confident even when we are wrong, and an objective observer is more likely to detect our errors than we are.

If you can't take the time for a vacation right now, or even a night out with friends, put something on the calendar - even if it's a month or a year down the road. Then whenever you need a boost of happiness, remind yourself about it.

Most of the time, we think fast. And most of the time we're really expert at what we're doing, and most of the time, what we do is right.

Laziness is built deep into our nature.