The mind of the polyglot is a very particular thing, and scientists are only beginning to look closely at how acquiring a second language influences learning, behavior and the very structure of the brain itself.

We are all born with an innate understanding of interpersonal equity - the idea that if you lend me your rake today, I'll respond in kind when you come to borrow my shovel tomorrow. Or nearly all of us are born with that. Psychopaths aren't.

There are a lot of obstacles in the way of our understanding animal intelligence - not the least being that we can't even agree whether nonhuman species are conscious. We accept that chimps and dolphins experience awareness; we like to think dogs and cats do. But what about mice and newts? What about a fly? Is anything going on there at all?

Learning to speak was the most remarkable thing you ever did.

Most businesses do not take governments seriously when it comes to climate, primarily because many governments have inconsistent and incoherent policies and then often keep changing them, sometimes retroactively. This makes businesses reluctant to invest in greener technologies.

I think the environmental movement has failed in that it's used the stick too much; it's used the apocalyptic tone too much; it hasn't sold the positive aspects of being environmentally concerned and trying to pull us out.

Clearly, climate change is an extremely important threat to us.

I understand the climate we live in and why people are curious. But it's just tough and almost emotionally violent - for anyone, I think - to see your personal life summarized in a sentence.