Until we have the courage to recognize cruelty for what it is... we cannot expect things to be much better in this world... We cannot have peace among men whose hearts 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.
The more clearly we can focus our attention on the wonders and realities of the universe about us the less taste we shall have for the destruction of our race. Wonder and humility are wholesome emotions, and they do not exist side by side with a lust for destruction. {Speech accepting the John Burroughs Medal}