There is only one evil, one crime, one sin: lack of heart.
(Multatuli [Eduard Douwer Dekker] (1820-1887), Dutch writer, civil servant. "Idee 450," The Oyster and the Eagle: Selected Aphorisms and Parables of Multatuli (1872), trans. by E. M. Beekman, U of Mass. Press (1974).)
When horror is associated with what is harmful, evil results, when disgust does, badness.
(Friedrich Nietzsche (1844-1900), German philosopher, classical scholar, critic of culture. Friedrich Nietzsche, Sämtliche Werke: Kritische Studienausgabe, eds. Giorgio Colli and Mazzino Montinari, Berlin, de Gruyter (1980).)