Bentham's felicific calculus treated all pleasures as commensurable in a single dimension of magnitude, differing only in intensity, duration, certainty, and extent. Mill objects that this misrepresents what we actually value: a person who has experienced both intellectual cultivation and bodily gratification knows that even a small measure of the former is worth more than any quantity of the latter. The preference is not snobbery but insight. Those who know both kinds of pleasure overwhelmingly prefer the higher, and their verdict is decisive.
The test of a pleasure's quality is the preference of those who have experience of both. Mill does not appeal to abstract theory but to the testimony of people who have cultivated their capacities: they prefer intellectual and moral activity even when it involves difficulty and dissatisfaction. A being of higher faculties, he argues, requires more to make them happy and is capable of more acute suffering — but would not consent to be changed into a lower being, even if offered any amount of the simpler pleasures that lower beings enjoy.
The distinction between higher and lower pleasures allows Mill to accommodate the common intuition that some ways of living are more worthy of human beings than others, without abandoning the utilitarian framework. Dignity, intellectual development, and moral virtue are not sacrificed to aggregate happiness — they are themselves components of the highest happiness, properly understood. This enriches utilitarianism at the cost of a complication that critics have found difficult: if pleasures differ in kind, how are they to be compared and summed?
The distinction between higher and lower pleasures is developed in Chapter 2 of Utilitarianism (1863). It has generated extensive debate about whether Mill remains a genuine utilitarian or has smuggled in a non-utilitarian standard of value.
