The more obsessively we focus on what a particular food is going to do for us, the less healthy we've become. Simple pleasures become complicated.

Childhood is a fundamental part of all human lives, parents or not, since that's how we all start out. And yet babies and young children are so mysterious and puzzling and even paradoxical.

It's turns out to be much easier to simulate a grandmaster chess player than it is to simulate a 2-year-old.

We don't measure the quality of our other relationships by how well the other person turns out, for instance whether my husband is a better person after 10 years than he was when I first met him.

What teenagers want most of all are social rewards, especially the respect of their peers.

To support the people we care about is intrinsic, it is not instrumental. It's not something we do because we're hoping to get some other outcome.

Adults tend to think they have much free will. Kids younger than six are less sure. They may be more realistic!