Paley

The impetus to the discussion of normative ethics was provided by the challenge of utilitarianism. The essential principle of utilitarianism was, as mentioned earlier, put forth by Hutcheson. Curiously, it was further developed by the widely read theologian William Paley (1743–1805), who provides a good example of the independence of metaethics and normative ethics. His position on the nature of morality was similar to that of Ockham and Luther—namely, he held that right and wrong are determined by the will of God. Yet, because he believed that God wills the happiness of his creatures, his normative ethics were utilitarian: whatever increases happiness is right; whatever diminishes it is wrong.

Bentham

Notwithstanding these predecessors, Jeremy Bentham (1748–1832) is properly considered the father of modern utilitarianism. It was he who made the utilitarian principle serve as the basis for a unified and comprehensive ethical system that applies, in theory at least, to every area of life. Never before had a complete, detailed system of ethics been so consistently constructed from a single fundamental ethical principle.

Bentham’s ethics began with the proposition that nature has placed human beings under two masters: pleasure and pain. Anything that seems good must be either directly pleasurable or thought to be a means to pleasure or to the avoidance of pain. Conversely, anything that seems bad must be either directly painful or thought to be a means to pain or to the deprivation of pleasure. From this Bentham argued that the words right and wrong can be meaningful only if they are used in accordance with the utilitarian principle, so that whatever increases the net surplus of pleasure over pain is right and whatever decreases it is wrong.

Bentham then considered how one is to weigh the consequences of an action and thereby decide whether it is right or wrong. One must, he says, take account of the pleasures and pains of everyone affected by the action, and this is to be done on an equal basis: “Each to count for one, and none for more than one.” (At a time when Britain had a major trade in slaves, this was a radical suggestion; and Bentham went farther still, explicitly extending consideration to nonhuman animals.) One must also consider how certain or uncertain the pleasures and pains are, their intensity, how long they last, and whether they tend to give rise to further feelings of the same or of the opposite kind.

Bentham did not allow for distinctions in the quality of pleasure or pain as such. Referring to a popular game, he affirmed that “quantity of pleasure being equal, pushpin is as good as poetry.” This led his opponents to characterize his philosophy as one fit for pigs. The charge is only half true. Bentham could have defended a taste for poetry on the grounds that, whereas one tires of mere games, the pleasures of a true appreciation of poetry have no limit; thus, the quantities of pleasure obtained by poetry are greater than those obtained by pushpin. All the same, one of the strengths of Bentham’s position is its honest bluntness, which it owes to his refusal to be fazed by the contrary opinions either of conventional morality or of refined society. He never thought that the aim of utilitarianism was to explain or to justify ordinary moral views; it was, rather, to reform them.

Mill

John Stuart Mill (1806–73), Bentham’s successor as the leader of the utilitarians and the most influential British thinker of the 19th century, had some sympathy for the view that Bentham’s position was too narrow and crude. His essay “Utilitarianism” (1861) introduced several modifications, all aimed at a broader view of what is worthwhile in human existence and at implications less shocking to established moral convictions. Although his position was based on the maximization of happiness (and this is said to consist of pleasure and the absence of pain), he distinguished between pleasures that are higher and those that are lower in quality. This enabled him to say that it is “better to be Socrates dissatisfied than a fool satisfied.” The fool, he argued, would be of a different opinion only because he has not experienced both kinds of pleasures.

Mill sought to show that utilitarianism is compatible with moral rules and principles relating to justice, honesty, and truthfulness by arguing that utilitarians should not attempt to calculate before each action whether that particular action will maximize utility. Instead, they should be guided by the fact that an action falls under a general principle (such as the principle that people should keep their promises), and adherence to that general principle tends to increase happiness. Only under special circumstances is it necessary to consider whether an exception may have to be made.

Sidgwick

Mill’s easily readable prose ensured a wide audience for his exposition of utilitarianism, but as a philosopher he was markedly inferior to the last of the 19th-century utilitarians, Henry Sidgwick (1838–1900). Sidgwick’s Methods of Ethics (1874) is the most detailed and subtle work of utilitarian ethics yet produced. Especially noteworthy is his discussion of the various principles of what he calls common sense morality—i.e., the morality accepted, without systematic thought, by most people. Price, Reid, and some adherents of their brand of intuitionism thought that such principles (e.g., truthfulness, justice, honesty, benevolence, purity, and gratitude) were self-evident, independent moral truths. Sidgwick was himself an intuitionist as far as the basis of ethics was concerned: he believed that the principle of utilitarianism must ultimately be based on a self-evident axiom of rational benevolence. Nonetheless, he strongly rejected the view that all principles of common sense morality are self-evident. He went on to demonstrate that the allegedly self-evident principles conflict with one another and are vague in their application. They could be part of a coherent system of morality, he argued, only if they were regarded as subordinate to the utilitarian principle, which defined their application and resolved the conflicts between them.

Sidgwick was satisfied that he had reconciled common sense morality and utilitarianism by showing that whatever was sound in the former could be accounted for by the latter. He was, however, troubled by his inability to achieve any such reconciliation between utilitarianism and egoism, the third method of ethical reasoning dealt with in his book. True, Sidgwick regarded it as self-evident that “from the point of view of the universe” one’s own good is of no greater value than the like good of any other person, but what could be said to the egoist who expresses no concern for the point of view of the universe, taking his stand instead on the fact that his own good mattered more to him than anyone else’s? Bentham had apparently believed either that self-interest and the general happiness are not at odds or that it is the legislator’s task to reward or punish actions so as to see that they are not. Mill also had written of the need for sanctions but was more concerned with the role of education in shaping human nature in such a way that one finds happiness in doing what benefits all. By contrast, Sidgwick was convinced that this could lead at best to a partial overlap between what is in one’s own interest and what is in the interests of all. Hence, he searched for arguments with which to convince the egoist of the rationality of universal benevolence but failed to find any. The Methods of Ethics concludes with an honest admission of this failure and an expression of dismay at the fact that, as a result, “it would seem necessary to abandon the idea of rationalizing [morality] completely.”