What we are finding out now is that there are not only limits to growth but also to technology and that we cannot allow technology to go on without public consent.

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.

Pride, anger and hatred are fruits from the same garden that poison the world when ripe. A leader cultivates no such fruits.

For me, conferences are like little mental vacations: a chance to go visit an interesting place for a couple of days, and come back rested and refreshed with new ideas and perspectives.

The trite objects of human efforts-possessions, superficial success, luxury-have always seemed contemptible to me.

The most powerful force in a woman's life is the need to be appreciated, loved and cherished for what she is.

My father was a lawyer and to my best knowledge nobody in my family before had interest in science.

Oceans is about glamour. I can't go looking like a slob can I?

Never, never waste a minute on regret. It's a waste of time.

Physical strength (hard work), mental strength (perseverance) and spiritual strength (love & acceptance) are the keys to continuous growth.

There are few places in England where you can get so much wildness and desolation of sea and sandhills, wood, green marsh and grey saltings as at Wells in Norfolk.

It is conceivable that I might well be reborn as a Chinese coolie. In such case I should lodge a protest.