It must have been law that developed in man the sense of just and unjust, right and wrong. Our readers may judge of this explanation for themselves. They know that law has merely utilized the social feelings of man, to slip in, among the moral precepts he accepts, various mandates useful to an exploiting minority, to which his nature refuses obedience. Law has perverted the feeling of justice instead of developing it.
Peter Kropotkin, Anarchist Morality (via philosophybits)