What I am interested in with birds, just as I am with spiders or monkeys, is what they do and why they do it.

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.

One's own form of sensibility is not not necessarily another's. Common sense is not so common.

He came into the world like a delivery that no one knew what to do with, and nobody wanted to sign for.

The final portrait is often furthest from the truth.

When what we are is what we want to be, that's happiness.

I learned at an early age that every breath that we take is borrowed. We need to be thankful for our life and never take it for granted.

I cannot convert men; I can only proclaim the Gospel

If we are addicted to people's approval, we will always experience pain when that approval is withdrawn--as it always is.

Growth is an erratic forward movement: two steps forward, one step back. Remember that and be very gentle with yourself.

I think all girls in the world wish they were a Parisian girl - that sort of effortless chic confidence and comfort in their own skin.

How beautiful it is for a man to die Upon the walls of Zion! to be called Like a watch-worn and weary sentinel, To put his armour off, and rest in heaven!