If human beings could only realise what the hare suffers, or the stag, when it is pursued by dogs, horses, and men bent on taking its life, or what t… - J. Howard Moore

Suppose we human beings were hunted with traps by a race of giants loo feet high, very ingenious, and absolutely without conscience so far as their treatment of us was concerned. Suppose that, in spite of all our vigilance, we were continually falling into these traps, which were hidden all about us, and compelled in order to escape to eat off our own arms or legs. Suppose that even then one out of every five of us was so ill-starred as to be caught a second time, and ended up, after hours or days of unspeakable agony, by having his head smashed into a jelly by a big club. Suppose we were absolutely helpless in the matter, and that our victimisers had no higher purpose in inflicting these fiendish outrages than to get a scalp or a jawbone to dangle about their demoniacal necks. Suppose, finally, in order to complete the analogy, that these people imagined themselves to be highly civilised and enlightened. What sort of an opinion do you think we would have in the course of ages as to the real character of these people and of their fitness to be the models and superintendents of a planet?

If man acted unkindly toward non-human beings only when he had to do so in order to avoid harm to himself—if he were as economical in his injuries to others as he would be if he had to endure them himself—the violence which to-day marks his dominion of the planet would be reduced to a mere vestige of what it is.

[M]an also was once a wild animal. And it is impossible to understand the things men do—many of them are so horrible and idiotic—unless we take into account the fact that this agricultural and town-building being whom we see when we look in a mirror was once a literal beast of the field, clothed in natural hair, without mercy, modesty, matrimony, or religion, living on roots, fruits, honey, and birds' eggs, and contending doubtfully with other animals about him for life.