Those who dwell, as scientists or laymen, among the beauties and mysteries of the earth, are never alone or weary of life.

The control of nature is a phrase conceived in arrogance.

It is not half so important to know as to feel.

Darling -- I suppose the world would consider us absolutely crazy, but it is wonderful to feel that way, isn't it? Sort of a perpetual springtime in our hearts.

Until we have courage to recognize cruelty for what it is - whether its victim is human or animal - we cannot expect things to be much better in the world. There can be no double standard. We cannot have peace among men whose hearts find delight in killing any living creature. By every act that glorifies or even tolerates such moronic delight in killing, we set back the progress of humanity.

Knowing what I do, there would be no future peace for me if I kept silent... It is, in the deepest sense, a privilege as well as a duty to speak out to many thousands of people.

As crude a weapon as the cave man's club, the chemical barrage has been hurled against the fabric of life - a fabric on the one hand delicate and destructible, on the other miraculously tough and resilient, and capable of striking back in unexpected ways. These extraordinary capacities of life have been ignored by the practitioners of chemical control who have brought to their task no "high-minded orientation," no humility before the vast forces with which they tamper.