William Dawson Le Sueur, Popular Science Monthly (1883)
“ The evolutionist condemns a wrong action on this ground, that it conflicts with some principle of proved utility, or of proved equity—the two are really one—which, if not as potent so might be desired, still has its place in the mind of the man who has neglected or overridden it. We condemn moral inconsistency just as we do intellectual inconsistency. When a man puts forward an opinion we regard as false, our only hope of persuading him that it is false is by bringing into the strongest possible relief some truth or opinion, accepted by him, with which the opinion in question conflicts. ”
