Compassion is the basis 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 all morality

Boundless compassion for all living beings is the surest and most certain guarantee of pure moral conduct, and needs no casuistry. Whoever is filled with it will assuredly injure no one, do harm to no one, encroach on no man's rights; he will rather have regard for every one, forgive every one, help every one as far as he can, and all his actions will bear the stamp of justice and loving-kindness.

We must delight in each other, make others conditions our own, rejoice together, mourn together, labor and suffer together, always having before our eyes our commission and community in the work, our community as members of the same body.

Kant, as we all know, compared moral law to the starry heavens, and found them both sublime. On the naturalistic hypothesis we should rather compare it to the protective blotches on a beetle's back, and find them both ingenious.