The wild places are where we began. When they end, so do we.

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.

I don't think we have very good records about what they were thinking except, as I pointed out earlier today, that they did invent our political system.

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

Perhaps we'll realize that each of us has not one vote but ten thousand or a million.

All I know about thermal pollution is that if we continue our present rate of growth in electrical energy consumption it will simply take, by the year 2000, all our freshwater streams to cool the generators and reactors.

I was actually telling people that - by harnessing the atom - we could enter a new era of unlimited power that would do away with the need to dam our beautiful streams.