We do nothing for children between the ages of zero and five. And we seem to be quite happy to have children growing up in not just poverty, which wouldn't be so bad, but isolation, lack of people around them, lack of support, lack of ability to go out and play in the dirt.

In most places and times in human history, babies have had not just one person but lots of people around who were really paying attention to them around, dedicated to them, cared to them, were related to them. I think the big shift in our culture is the isolation in which many children are growing up.

I've had three of my own children and spent my professional life thinking about children. And yet I still find my relation to my children deeply puzzling.

Overall, female scientists have fewer resources than male scientists, just as poor people have less access to health care. But if you compare male and female scientists with identical resources, you find that the women are just as likely to be successful.

It's a fine line between magic and science. In medieval times, science was magic.

Pure science - this vision of the universe as 15 billion light years across - I am bedazzled and awed by it.

Presented with the claims of nineteenth-century racist anthropology, a rational person will ask two sorts of questions: 'What is the scientific status of the claims?' 'What social or ideological needs do they serve?'

We're finding a third way for biologists to change the world. It's very hard to change the world when the only directions available in biology are academia and the pharmaceutical industry.