We're in a culture where everything is either consumption or production, so child care is either a very, very bad-paying form of work or a very expensive luxury that you purchase. There isn't a good place in our picture of the world for what caregiving is about. Even teenage babysitters have sort of disappeared from the scene.

We don't wife our husbands and we don't child our parents.

What happens when children reach puberty earlier and adulthood later? The answer is: a good deal of teenage weirdness.

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.

We provide a secure, stable space for children to grow up in, so children will be able to take risks and have adventures and do things that are unexpected. If there isn't a risk that your children can fail, then you haven't succeeded as a parent.

What's it like to be a baby? It's like being in love in Paris for the first time after you've had three double espressos.

Teaching is a very effective way to get children to learn something specific - this tube squeaks, say, or a squish then a press then a pull causes the music to play. But it also makes children less likely to discover unexpected information and to draw unexpected conclusions.