To suggest that God specifically created a worm to torture small African children is blasphemy as far as I can see. The Archbishop of Canterbury doesn't believe that.

The nature of human beings is that they'd far rather face the disaster that is happening tonight than the one that is happening tomorrow.

If we were all to reduce our demands for energy, it would make an enormous amount of difference.

I don't approve of sunbathing, and it's bad for you.

I just wish the world was twice as big and half of it was still unexplored.

How could I look my grandchildren in the eye and say I knew what was happening to the world and did nothing.

I had a huge advantage when I started 50 years ago - my job was secure. I didn't have to promote myself. These days there's far more pressure to make a mark, so the temptation is to make adventure television or personality shows. I hope the more didactic approach won't be lost.