I suppose happiness is something one enjoys, but I suspect that happiness is not a state but rather a transition.

Fundamentally not to waste energy. If we were all to reduce our demands for energy, it would make an enormous amount of difference.

I've never actually met one in the wild, but I have seen a king cobra. They go towards people, they rear up six feet tall and they're very aggressive and they are very fast. And one bite means certain death. So if I encountered a king cobra in the wild I would be very alarmed.

Opponents say natural selection is not a theory supported by observation or experiment; that it is not based on fact; and that it cannot be proved. Well, no, you cannot prove the theory to people who won't believe in it any more than you can prove that the Battle of Hastings took place in 1066. However, we know the battle happened then, just as we know the course of evolution on earth unambiguously shows that Darwin was right.

I'm luckier than my grandfather, who didn't move more than five miles from the village in which he was born.

The World is full of wonders, but they become more Wonderful, not less Wonderful when Science looks at them.

It is that range of biodiversity that we must care for - the whole thing - rather than just one or two stars.