To witness that calm rhythm of life revives our worn souls and recaptures a feeling of belonging to the natural world. No one can return from the Serengeti unchanged, for tawny lions will forever prowl our memory and great herds throng our imagination.

My interest in wildlife began early and I don't know how early because it's the only thing I've ever been interested in. I've always had a certain curiosity, a certain wonder about the natural world. I like to be outdoors.

There are never victories in conservation. If you want to save a species or a habitat, it's a fight forevermore. You can never turn your back.

To witness that calm rhythm of life revives our worn souls and recaptures a feeling of belonging to the natural world. No one can return from the Serengeti unchanged, for tawny lions will forever prowl our memory and great herds throng our imagination.

A large animal needs a large area. If you protect that area, you're also protecting thousands of other plants and animals. You're saving all these species that future generations will want - you're saving the world for your children and your children's children. . . . The destruction of species is final. If you lose a species, you lose the genes, you lose all the potential drugs and potential foods that could be useful to the next generations. The ecosystems will not function as they have.

A ruin is not just something that happened long ago to someone else; its history is that of us all, the transience of power, of ideas, of all human endeavors.

You can do the best science in the world but unless emotion is involved it's not really very relevant. Conservation is based on emotion. It comes from the heart and one should never forget that.