If I can make programmes when I'm 95, that would be fine. But I would think I'll have had enough by then.

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.

We ought to pray persistently.

Be thankful always.

Not the last time in Western history, the revolutionaries armed themselves with a new religion to steel themselves for greater outrageous.

Always do what you're afraid to do. ...I will prove myself strong when they think I am sick. I will prove myself brave when they think I am weak.

That's a very odd notion because it involves seeing money up there on the screen - if something cost $5 million to make, they want to see that $5 million up there.

As long as gas is cheaper than bottled water, we can't be in a position of dictating to the consumer what to buy.

We don't have to take our clothes off to have a good time.

If each day is a gift, I'd like to know where to return Mondays!

It is so ridiculous to limit oneself to one version of the truth.

What is surprising is not that oppression should make its appearance only after higher forms of economy have been reached, but that it should always accompany them.