Mental effort, I would argue, is relatively rare. Most of the time we coast.

Our comforting conviction that the world makes sense rests on a secure foundation: our almost unlimited ability to ignore our ignorance.

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

If there was one ubiquitous recommendation about marriage it was this: "Don't go to bed angry."

Divorced women, compared to married women, are less satisfied with their lives, which is not surprising. But they're actually more cheerful, when you look at the average mood they're in in the course of the day.

There are some conditions where you have to trust your intuition.

People who face a difficult question often answer an easier one instead, without realizing it.