The horse, the mule, the camel, and the ox have pretty nearly made man what he is. They have contributed to human welfare and achievement to an exten… - J. Howard Moore

[W]e are a part of Nature, we human beings, just as truly a part of the universe of things as the insect or the sea. And are we not as much entitled to be considered in the selection of a model as the part 'red in tooth and claw'? At the feet of the tiger is a good place to study the dentition of the cat family, but it is a poor place to learn ethics.

These races of beings which man has associated with himself are living beings. They eat and drink and breathe, they suffer and enjoy, reproduce their kind and love their young, much as human beings do. They have been taken from their natural surroundings and forced to adopt ways of living that are often cruel, or even horrible. There is nothing much more certain than that men and women of the far future will recognize their kinship with these races, and will treat them in an entirely different way from what we do.

All the barbarism is not behind us nor around us. History looks dark and discouraging to us, as we turn its terrible pages, but we would see something just as discouraging if we would look into a mirror.