Children know how to be cruel, and the cruelty of their elders is the surest residue of the malaise the young feel toward things strange, things other, things that reveal our own ignorance or insufficiency

Man is subject to innumerable pains and sorrows by the very condition of humanity, and yet, as if nature had not sown evils enough in life, we are continually adding grief to grief and aggravating the common calamity by our cruel treatment of one another.

Cruelty ever proceeds from a vile mind, and often from a cowardly heart.

When men are inhuman, take care not to feel towards them as they do towards other humans.

Man's inhumanity to man Makes countless thousands mourn.

Cruelty is, perhaps, the worst kind of sin. Intellectual cruelty is certainly the worst kind of cruelty.

Cruelty is the law pervading all nature and society; and we can't get out of it if we would.

The theatre breeds its own kind of cruelty, and its sadism takes on a keener edge since it can be enjoyed under the innocent guise of critical judgment.

Pity is not natural to man. Children always are cruel. Savages are always cruel.

Today there's more fellowship among snakes than among mankind. Wild beasts spare those with similar markings.