Science has been quite embattled. It's the most important thing there is. An arts graduate is not going to fix global warming. They may do other valuable things, but they are not going to fix the planet or cure cancer or get rid of malaria.

Out of the thirty thousand types of edible plants thought to exist on Earth, just eleven—corn, rice, wheat, potatoes, cassava, sorghum, millet, beans, barley, rye, and oats—account for 93 percent of all that humans eat, and every one of them was first cultivated by our Neolithic ancestors.

It is always quietly thrilling to find yourself looking at a world you know well but have never seen from such an angle before.

Being a pessimist is just such a gloomy way of looking at things, so I have to hope for the best - life wouldn't be worth living if we didn't have hope. And I also do think that human beings often do do wonderful, correct, brilliant things. So, on balance, I'd like to be optimistic about the future.

If you believe in god, it's much more fantastic to believe that he created this universe billions of years ago and set in motion this long train of activities that eventually resulted in us. I think that's so much more satisfying, more thrilling, than the idea that it was all done in seven days.

Making English grammar conform to Latin rules is like asking people to play baseball using the rules of football.

It is unthinkable to have a British countryside that doesn't have actual functioning farmers riding tractors, cows in fields, things like that.