Realize that change - whilst we want it to happen fast - is usually the result of a great deal of work, and often comes as a result of a series of compromises (so long as we do not compromise our values).

You aren't going to save the world on your own. But you might inspire a generation of kids to save it for all of us. You would be amazed at what inspired children can do.

I like some animals more than some people, some people more than some animals.

Let us develop respect for all living things. Let us try to replace violence and intolerance with understanding and compassion. And love.

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.

As human beings, we can encompass a vague feeling of what the universe is, and all in this funny little brain here - so there has to be something more than just brain, it has to be something to do with spirit as well.

I started as - well, I wanted to be Poet Laureate. And I wanted to be a naturalist. That's how I began. I didn't have any desire to go and be a scientist. Louis Leakey channeled me there. I'm delighted he did. I love science. I love analyzing and making sense of all these observations. So, it was the perfect rounding off of who I was into who I am.