"In nature I see, or seem to see, good and evil—intelligence and ignorance—goodness and cruelty—care and carelessness—economy and waste. I see means that do not accomplish the ends—designs that seem to fail. To me it seems infinitely cruel for life to feed on life—to create animals that devour others. The teeth and beaks, the claws and fangs, that tear and rend, fill me with horror. What can be more frightful than a world at-war? Every leaf a battle-field—every flower a Golgotha—in every drop of water pursuit, capture and death. Under every piece of bark, life lying in wait for life. On every blade of grass, something that kills,—something that suffers. Everywhere the strong living on the weak—the superior on the inferior. Everywhere the weak, the insignificant, living on the strong—the inferior on the superior—the highest food for the lowest—man sacrificed for the sake of microbes. Murder universal. Everywhere pain, disease and death—death that does not wait for bent forms and gray hairs, but clutches babes and happy youths. Death that takes the mother from her helpless, dimpled child—death that fills the world with grief and tears."
January 1, 1970
https://en.wikiquote.org/wiki/Wild_animal_suffering