When a brute inflicts pain he does it innocently; it is not wrong; for him there is no such thing as wrong. And he does not inflict pain for the pleasure of inflicting it—only man does that.
 Mark Twain, The Mysterious Stranger (1916). copy citation

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Author Mark Twain
Source The Mysterious Stranger
Topic pain pleasure
Date 1916
Language English
Reference
Note
Weblink http://www.gutenberg.org/files/3186/3186-h/3186-h.htm

Context

““It is like your paltry race—always lying, always claiming virtues which it hasn't got, always denying them to the higher animals, which alone possess them. No brute ever does a cruel thing—that is the monopoly of those with the Moral Sense. When a brute inflicts pain he does it innocently; it is not wrong; for him there is no such thing as wrong. And he does not inflict pain for the pleasure of inflicting it—only man does that. Inspired by that mongrel Moral Sense of his! A sense whose function is to distinguish between right and wrong, with liberty to choose which of them he will do. Now what advantage can he get out of that?” source