“universal compassion is the only guarantee of morality.”

“The assumption that animals are without rights and the illusion that our treatment of them has no moral significance is a positively outrageous example of Western crudity and barbarity. Universal compassion is the only guarantee of morality.”

“Compassion is the basis of morality.”

“Compassion is the basis of all morality”

“Compassion for animals is intimately associated with goodness of character, and it may be confidently asserted that he who is cruel to animals cannot be a good man.”

“Writers may be classified as meteors, planets, and fixed stars. They belong not to one system, one nation only, but to the universe. And just because they are so very far away, it is usually many years before their light is visible to the inhabitants of this earth.”

“Consider the Koran, for example; this wretched book was sufficient to start a world-religion, to satisfy the metaphysical needs of countless millions for twelve hundred years, to become the basis of their morality and of a remarkable contempt for death, and also to inspire them to bloody wars and the most extensive conquests. Much may be lost in translation, but I have not been able to discover in it one single idea of value.”