"Ethics, in our part of the world, may be considered to have advanced, at least in its pretensions, to the anthropocentric stage of evolution. Aggregation has advanced from individual to tribe, and from tribe to race, and from race to sex, and from sex to species, until to-day the ethical conception of many minds includes, with greater or less vividness and sincerity, all sexes, colors, and conditions of men. The fact that an animal is a human, that is, that he belongs to the hominine species of beings, entitles him, regardless of his imperfections, to some sort of consideration."