Tomorrow is not a promise, but a chance.

Sunsets are my escape into the reality I want to continuously live.

Keep looking up! I learn from the past, dream about the future and look up. There's nothing like a beautiful sunset to end a healthy day.

Happiness, I have grasped, is a destination, like strawberry Fields. Once you find the way in, there you are, and you'll never feel low again.

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.

When a dream is fulfilled, it is always a glorious feeling.

If anybody ran a business like that they would be out of business quickly, and Barack Obama's leadership is driving this business, the United States of America, toward a fiscal cliff.

You can have the right kind of experience and the wrong kind of experience. Mine is rooted in the real lives of real people, and it will bring real results if we have the courage to change.

Remaining childish is a tremendous state of innocence.

For better or worse, most of my writing life has been about people that work behind the scenes. I'm interested in finding extraordinary moments in otherwise normal people.

If I have courage, it is because I have faith in the knowledge of my ancestors.

If what you have done yesterday still looks big to you. You haven't done much today.

My mother is going to have to stop lying about her age because pretty soon I'm going to be older than she is.

I keep six honest serving men (they taught me all i knew); Theirs names are What and Why and When And How And Where and Who.

There is no explanation for evil. It must be looked upon as a necessary part of the order of the universe. To ignore it is childish, to bewail it senseless.