I wasn't trying to be a scientist. I only ever wanted to be a naturalist, like a David Attenborough.

Children can change the world.

The only possible way to get somebody to change is to reach into their hearts.

There are many animal-welfare groups that sometimes seem to forget that human beings are animals too, that we need to include them in our sphere of compassion.

Hundreds and thousands of young people around the world can break through and can make this a better world for all living things. Once young people know the problems and are empowered to act, they have great power to impact the world.

Without the support of local people, you might as well give up because you can make all the noise you like, you can demarcate a national park, but if the people outside want to go creeping into a forest you really can't stop them. They've got to get a benefit.

Chimps taught us we're not separated from the animal kingdom, we're a part of it.