I believe in the rights of creatures other than man.

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.

If we knew a person was going to die, we'd hold harder to the memories."Fire corrected him, in a whisper. "The good memories.

If you want to be happy or if you want to be miserable—either way is your choice. So choose to be happy.

A man of vision cannot question his potentials. He does not doubt his capabilities. He keeps going because he had seen himself gone already in his visions.

Quit aspiring and dreaming and start being.

No Fridolf, bother all this learning. I can't study anymore because I must climb the mast to see what kind of weather we're going to have tomorrow.

Vomit and feces are two reason I have decided not to procreate.

Leader’s potential is determined by those closest to him.

His statement to himself should have been, 'I possess this now, therefore I am happy', instead of what it so Victorianly was: "I cannot possess this for ever, and therefore am sad."

I can be really annoying, but I also feel like I'm a nice person.

In 2002, in this country, there was an observation that for the first time in America, more kids were actively pursuing skateboarding than baseball.