Along with the possibility of extinction of mankind by nuclear war, the central problem of our age has therefore become the contamination of man's total environment with such substances of incredible potential for harm-substances that accumulate in the tissues of plants and animals and even penetrate the germ cells to shatter or alter the very material of heredity upon which the shape of the future depends.

It is a wholesome and necessary thing for us to turn again to the earth and in the contemplation of her beauties to know the sense of wonder and humility.

In nature nothing exists alone.

We cannot have peace among men whose hearts find delight in killing any living creature.

The question is whether any civilization can wage relentless war on life without destroying itself, and without losing the right to be called civilized.

The ocean is a place of paradoxes. It is the home of the great white shark, two-thousand-pound killer of the seas, and of the hundred-foot blue whale, the largest animal that ever lived. It is also the home of living things so small that your two hands might scoop up as many of them as there are stars in the Milky Way.

For the sense of smell, almost more than any other, has the power to recall memories and it's a pity we use it so little.