And again, though we cannot prove, we feel, that we are deathless. We perceive that life is not like those dramas so beloved by the people—in which every villain is punished, and every act of virtue meets with its reward; we learn anew every day that the wisdom of the serpent fares better here than the gentleness of the dove, and that any thief can triumph if he steals enough. If mere worldly utility and expediency were the justification of virtue, it would not be wise to be too good. And yet, knowing all this, having it flung into our faces with brutal repetition, we still feel the command to righteousness, we know that we ought to do the inexpedient good.
Will Durant, The Story of Philosophy: The Lives and Opinions of the World's Greatest Philosophers
categorical-imperative, duty, ethics, good, indifferent-nature, just-world, kant, morality, utility, virtue