To see others suffer does one good, to make others suffer even more: this is a hard saying but an ancient, mighty, human, all-too-human principle to which even the apes might subscribe; for it has been said that in devising bizarre cruelties they anticipate man
Nietzsche establishes cruelty as a primordial human pleasure, foundational to civilization’s economy of suffering rather than a mere deviation from it.
, On the Genealogy of Morals, 1887thesis