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

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

Putting together philosophy and children would have been difficult for most of history. But very fortunately for me, when I started graduate school there was a real scientific revolution taking place in developmental psychology.

Because we imagine, we can have invention and technology. It's actually play, not necessity, that is the mother of invention.

The youngest children have a great capacity for empathy and altruism. There's a recent study that shows even 14-month-olds will climb across a bunch of cushions and go across a room to give you a pen if you drop one.

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.

I'm afraid the parenting advice to come out of developmental psychology is very boring: pay attention to your kids and love them.