It was the kind of pure, undiffused light that can only come from a really hot blue sky, the kind that makes even a concrete highway painful to behold and turns every distant reflective surface into a little glint of flame. Do you know how sometimes on very fine days the sun will shine with a particular intensity that makes the most mundane objects in the landscape glow with an unusual radiance, so that buildings and structures you normally pass without a glance suddenly become arresting, even beautiful? Well, they seem to have that light in Australia nearly all the time.

[The Royal Society] is quite simply the voice of science in Britain. It is intellectually rigorous, not afraid to be outspoken on controversial issues such as climate change, but it is not aggressively secular either, insisting on a single view of the world. In fact, there are plenty of eminent scientists - Robert Winston, for instance - who are also men of faith.

I tell the kids that, even in a childhood marked by despair and deprivation, I knew that no matter what happened, I still had my family, or at least the remnants of a family ripped apart by divorce and then glued back together in various odd arrangements through a series of ill- advised remarriages. It was good to know I had a solid foundation.

You may find that your parents are the most delightful people, but you don't want to live with them.

Physics is really nothing more than a search for ultimate simplicity, but so far all we have is a kind of elegant messiness.

I understand cricket - what's going on, the scoring - but I can't understand why.

So, if people didn’t settle down to take up farming, why then did they embark on this entirely new way of living? We have no idea – or actually, we have lots of ideas, but we don’t know if any of them are right. According to Felipe Fernández-Armesto, at least thirty-eight theories have been put forward to explain why people took to living in communities: that they were driven to it by climatic change, or by a wish to stay near their dead, or by a powerful desire to brew and drink beer, which could only be indulged by staying in one place.