Even chimps understand the concept - if a troop of chimps enters a fruit tree, they will only pick the fruits that are ripe and leave the others growing. That is sustainability.

Terrorism is usually fueled by poverty, and the fanatical faith of the terrorists who truly believe that the more people they kill who do not subscribe to their faith, the greater their reward in heaven.

I believe that we have more capability than any other creature to control our biological inheritance - and we do so most of the time.

You have to really care about what you say. And if you don't, it will never come out quite right, unless you go into acting, in which case you have to act fast before you realize it is something which you do not believe in.

I cannot remember a time when I did not want to go to Africa to study animals.

Animals have personalities and minds and emotions.

Every single day, we could be in a motorcar accident, so, we have to carry on with our lives, and not imagine terror around every corner.