“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.”
Schopenhauer criticized Spinoza’s belief that animals are to be used as …a mere means for the satisfaction of humans
and protested against the use of the pronoun “it” in reference to animals because it led to the treatment of them as though they were inanimate things.
To reinforce his points, Schopenhauer referred to the look in the eyes of a monkey who had been shot and also the grief of a baby elephant whose mother had been killed by a hunter.
“Compassion for animals is intimately associated with goodness of character, and it may be confidently asserted that he who is cruel to living creatures cannot be a good man.”