I often get letters, quite frequently, from people who say how they like the programmes a lot, but I never give credit to the almighty power that created nature.

No one will protect what they don't care about, and no one will care about what they have never experienced.

The truth is: the natural world is changing. And we are totally dependent on that world. It provides our food, water and air. It is the most precious thing we have and we need to defend it.

Instead of controlling the environment for the benefit of the population, perhaps we should control the population to ensure the survival of our environment

What humans do over the next 50 years will determine the fate of all life on the planet.

Anyone who believes in indefinite growth on a physically finite planet is either mad or an economist

The World is full of wonders, but they become more Wonderful, not less Wonderful when Science looks at them.

The question is, are we happy to suppose that our grandchildren may never be able to see an elephant except in a picture book?

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

Bringing nature into the classroom can kindle a fascination and passion for the diversity of life on earth and can motivate a sense of responsibility to safeguard it.

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

The problem in our country isn't with books being banned, but with people no longer reading. You don't have to burn books to destroy a culture. Just get people to stop reading them.

The photoshoot glitz and TV studio make-up isn't the real me. I spend most days at home in Bristol in jeans and a T-shirt running around after the kids or shopping in the Co-op.

Anyone who's really interested in anything spends time alone.

Our earliest efforts will be heard with joy by our Heavenly Father, however they are phrased.

I still get very high and very low in life. Daily. But I've finally accepted the fact that sensitive is just how I was made, that I don't have to hide it and I don't have to fix it. I'm not broken.

Listen more often than you speak.

I'm not that interesting!

Again, both literature and philosophy work by appealing to certain reigning idols.

It's fine to dress in polka dots and pink crinoline if you want. What I recoil from is the idea that that alone is the only way to be female.

He is fortunate who had been able to learn the causes of things. -Felix qui potuit rerum cognoscere causas