I'm luckier than my grandfather, who didn't move more than five miles from the village in which he was born.

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.

God is a circle whose center is everywhere, and its circumference nowhere.

Unhappy poor people at least have the fantasy that money will make them happy

I have always kept a stack of library books next to my bed as a lifeline. If I ever woke in the middle of the night too scared to move or too sad to roll over, the books were my saviors.

In a world that contains tragedies, we must realize that they’re vastly outnumbered by blessings

It's easier to write about pain than about joy. Joy is wordless.

Some of you expressed surprise that I showed up-so many emails to read!

There is no bad light. There is spectacular light and difficult light. It's up to you to use the light you have.

If you convinced me And I convinced you, Would there not still be Two points of view?

Quarterbacks have to ask the crowd to quiet down. Pitchers never do.

Everything is in motion. Everything flows. Everything is vibrating.