We may learn anew what compassion and beauty are, and pause to listen to the Earth's music.

The more we pour the big machines, the fuel, the pesticides, the herbicides, the fertilizer and chemicals into farming, the more we knock out the mechanism that made it all work in the first place.

All technology should be assumed guilty until proven innocent

Overpopulation is perhaps the biggest problem facing us, and immigration is part of that problem. It has to be addressed.

Truth and beauty can still win battles. We need more art, more passion, more wit in defense of the Earth.

Sometimes luck is with you, and sometimes not, but the important thing is to take the dare. Those who climb mountains or raft rivers understand this.

Understanding how DNA transmits all it knows about cancer, physics, dreaming and love will keep man searching for some time.

We are no longer inheriting the Earth from our parents, we are stealing it from our children.

Without wilderness, the world's a cage.

Apollo 13, as you may remember, gave us a reactor that is bubbling away right now somewhere in the Pacific. It's supposed to be bubbling away on the moon, but it's in the Pacific Ocean instead.

Bring diversity back to agriculture. That's what made it work in the first place.

The choice of a man defines is paths.

We often hear that mathematics consists mainly of 'proving theorems.' Is a writer's job mainly that of 'writing sentences?

Being curious is the most important part of being a journalist. It might be the most important part of being anything.

Each morning sees some task begin each evening sees it close Something attempted something done has earned a night's repose.

My hopes are not always realized, but I always hope.

Happiness? A good cigar, a good meal, a good cigar and a good woman - or a bad woman; it depends on how much happiness you can handle.

If wars in the future are to be prevented the nations must be united in their determination to keep the peace under law.

I'd rather be right than President.

The nature of the internet is that you don't know who is behind the screen.

I'm conservative with my money. I'm the one who's got a family and I can't be playing basketball forever, so when I retire, I want to live on what I've made.