Our own happiness, and that of our species, are assumed to be so pre-eminent that we sacrifice without hesitancy the most sacred interests of others,… - J. Howard Moore

[S]ince vegetal fat is identical chemically with animal fat, and vegetal protein with animal protein, since these substances are found abundantly in non-flesh products, and since the only other food substances used by man (starch and sugar) are not found except in plants and plant products, it may be asserted positively that from the standpoint of food-supply there is no reason why man should prey when he eats. The plant world contains all of the compounds necessary for human alimentation, it contains them abundantly, it contains them in forms of the highest delicacy and the greatest variety and economy, and it contains them in a much more prime condition than they are found in the diseased tissues of our mistreated servants.

The end of conduct is not the happiness and welfare of oneself, or of one's family, or one's town, or one's country, or even of one's race, but the welfare and happiness of all beings, including oneself, the welfare of the world, of the universe, including the generations to come as well as the beings of the present.

Human beings are not children of the sun. They are children of the jungle. We have in our natures many things that we would be a great deal better off without instincts and ways of acting which we would never have included in ourselves in the world if we had had the privilege of choosing just what was to go into our natures. These instincts and ways of acting are vestigial. They were useful to our ancestors, but owing to changes in surroundings they are not useful to us.