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.

Perhaps most ridiculous of all is the suggestion that we 'keep' our radioactive garbage for the use of our descendants. This 'solution', I think, requires an immediate poll of the next 20,000 generations.

Childbearing should be a punishable crime against society, unless the parents hold a government license. All potential parents should be required to use contraceptive chemicals, the government issuing antidotes to citizens chosen for childbearing.

If something's going wrong with this planet we'd better fix it here and not look for some sort of escape.

I'm always impressed with what young people can do before older people tell them it's impossible

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

Polite conservationists leave no mark save the scars upon the Earth that could have been prevented had they stood their ground.