justice, as a classifying factor of our actions (being just or unjust) is one of the certain moral requirements, and when the requirements are all regarded collectively, they are viewed as greater according to this scale of "social utility" as Mill puts it. He also notes that, contrary to what its critics might say, there is "no known Epicurean theory of life which does not assign to the pleasures of the intellect ... a much higher value as pleasures than to those of mere sensation." However, he accepts that this is usually because the intellectual pleasures are thought to have circumstantial advantages, i.e. "greater permanency, safety, uncostliness, &c." Instead, Mill will argue that some pleasures are intrinsically better than others. The accusation that hedonism is a "doctrine worthy only of swine" has a long history. In Nicomachean Ethics (Book 1 Chapter 5), Aristotle says that identifying the good with pleasure is to prefer a life suitable for beasts. The theological utilitarians had the option of grounding their pursuit of happiness in the will of God; the hedonistic utilitarians needed a different defence. Mill's approach is to argue that the pleasures of the intellect are intrinsically superior to physical pleasures. Few human creatures would consent to be changed into any of the lower animals, for a promise of the fullest allowance of a beast's pleasures; no intelligent human being would consent to be a fool, no instructed person would be an ignoramus, no person of feeling and conscience would be selfish and base, even though they should be persuaded that the fool, the dunce, or the rascal is better satisfied with his lot than they are with theirs. ... A being of higher faculties requires more to make him happy, is capable probably of more acute suffering, and certainly accessible to it at more points, than one of an inferior type; but in spite of these liabilities, he can never really wish to sink into what he feels to be a lower grade of existence. ... It is better to be a human being dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied. And if the fool, or the pig, are of a different opinion, it is because they only know their own side of the question... Mill argues that if people who are "competently acquainted" with two pleasures show a decided preference for one even