Yet another proposal would have us rocket the waste into the sun, but, as you're probably aware, about one in ten of our space shots doesn't quite make it out of the earth's gravitational field.

We cannot go on fiddling while the earth's wild places burn.

While the death of young men in war is unfortunate, it is no more serious than the touching of mountains and wilderness areas by humankind.

True wilderness is where you keep it, and real wilderness experience cannot be a sedentary one; you have to seek it out not seated, but afoot.

People have alleged that I have inspired many young people over the years, but I say, it was just the opposite.

It's like turning the space program over to the Long Island Railroad.

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.