Only within the moment of time represented by the present century has one species -- man -- acquired significant power to alter the nature of the world.

But man is a part of nature, and his war against nature is inevitably a war against himself.

One way to open your eyes is to ask yourself, "What if I had never seen this before? What if I knew i would never see it again?

Conservation is a cause that has no end. There is no point at which we will say our work is finished.

Those who contemplate the beauty of the earth find reserves of strength that will endure as long as life lasts.

The human race is challenged more than ever before to demonstrate our mastery, not over nature but of ourselves.

Science is part of the reality of living; it is the what, the how, and the why of everything in our experience.

We cannot have peace among men whose hearts find delight in killing any living creature.

Knowing what I do, there would be no future peace for me if I kept silent.

The more clearly we can focus our attention on the wonders and realities of the universe about us, the less taste we shall have for destruction.

Drink in the beauty and wonder at the meaning of what you see.

I never fear death... for me it's only a new beginning.

An Atheist, is nothing but a bankrupt Anarchist.

Deciding what to be is more important than deciding what to do.

A man's not doing much until the cause he works for possesses all there is of him. Desire, when harnessed, is power.

Maybe we all need to leave our children with a value legacy, and not a financial one. A value for things with a personal touch - an autographed book, a soul-searching letter.

... the core problem with Christians communicating faith: we do not always do so in love. That is an indispensable point to presenting faith in a grace-full way.

Failure to me became not trying versus not succeeding

If I don't offend somebody, then I'm probably not funny.

I bought a house for my mom, I bought a house for my dad, I bought a house for my sister.

When you mutilate movies for mass media, you tamper with the hearts and minds of America.