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

There are many different kinds of radioactive waste and each has its own half-life so, just to be on the safe side and to simplify matters, I base my calculations on the worst one and that's plutonium.

The risk presented by these lethal wastes is like no other risk, and we should not be expected to accept it or to project it into the future in order for manufacturers and utilities to make a dollar killing now.

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.

If you want to get people off drugs, improve reality.

Keep your rivers flowing as they will, and you will continue to know the most important of all freedoms-the boundless scope of the human mind to contemplate wonders, and to begin to understand their meaning.

Let man heal the hurt places and revere whatever is still miraculously pristine.