I suspect that happiness is not a state but rather a transition.

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.

It is hard enough to face the moral law even with the revelation that the divine justice and divine mercy are conjoined. It offends our pride to be forgiven, terrifies it to surrender control.

I came to the earth for something, I must do something, and I must live and leave not just anything, but something!

Hope arouses, as nothing else can arouse, a passion for the possible.

Whether ours shall be a government of laws and not of men is now for Congress and ultimately the American people.

Despair ... is like a gas, odourless, tasteless, without nourishment. You breathe it in, your limbs relax, you cease to care, even at the moment when the steel touches your throat.

The wrath of God burns against them, their damnation does not slumber; the pit is prepared, the fire is made ready, the furnace is now hot, ready to receive them; the flames do now rage and glow.

Jokes are one of the things that bind the culture. If you can't have jokes about everybody in society and if one group is hedged off and protected then that group can never truly be integrated.

Generally my instinct is to not do biographical movies. I want to build characters and not be locked into playing a part in history.

Some people can only be happy being a star. What happens if and when the work dries up?

When we ever invited the beast to dinner he didn't come in and swipe the napkins and start taking notes on the tablecloth 'bout how to take over the whole house?