Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult, at least I have found it so – than constantly to bear this conclusion in mind.
The love of a dog for his master is notorious; in the agony of death he has been known to caress his master, and everyone has heard of the dog suffering under vivisection, who licked the hand of the operator; this man, unless he had a heart of stone, must have felt remorse to the last hour of his life.
The most powerful natural species are those that adapt to environmental change without losing their fundamental identity which gives them their competitive advantage.
Man in his arrogance thinks himself a great work, worthy of the interposition of a deity. More humble, and I believe truer, to consider him created from animals.
