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Negative utilitarianism is a version of the ethical theory utilitarianism that gives greater priority to reducing suffering (negative utility or 'disutility') than to increasing happiness (positive utility). This differs from classical utilitarianism, which does not claim that reducing suffering is intrinsically more important than increasing happiness. Both versions of utilitarianism hold that morally right and morally wrong actions depend solely on the consequences for overall well-being. 'Well-being' refers to the state of the individual. The term 'negative utilitarianism' is used by some authors to denote the theory that reducing negative well-being is the only thing that ultimately matters morally. Others distinguish between 'strong' and 'weak' versions of negative utilitarianism, where strong versions are only concerned with reducing negative well-being, and weak versions say that both positive and negative well-being matter but that negative well-being matters more.
Other versions of negative utilitarianism differ in how much weight they give to negative well-being ('disutility') compared to positive well-being (positive utility), as well as the different conceptions of what well-being (utility) is. For example, negative preference utilitarianism says that the well-being in an outcome depends on frustrated preferences. Negative hedonistic utilitarianism thinks of well-being in terms of pleasant and unpleasant experiences. There are many other variations on how negative utilitarianism can be specified.
The term "negative utilitarianism" was introduced by R. Ninian Smart in 1958 in his reply to Karl Popper's The Open Society and Its Enemies. Smart also presented the most famous argument against negative utilitarianism: that negative utilitarianism would entail that a ruler who is able to instantly and painlessly destroy the human race would have a duty to do so. Furthermore, every human being would have a moral responsibility to commit suicide, thereby preventing future suffering. Many authors have endorsed versions of this argument, and some have presented counterarguments against it.
- 1 History
- 2 Versions of negative utilitarianism
- 3 The benevolent world-exploder
- 3.1 Cooperation between different value systems
- 3.2 Eliminating vs. reducing disutility
- 3.3 Attempting world destruction would be counterproductive
- 3.4 Life could evolve again in a worse way
- 3.5 Getting killed would be a great evil
- 3.6 Frustrated preferences
- 3.7 Combining negative utilitarianism with rights
- 4 Other works
- 5 See also
- 6 Citations
- 7 References
- 8 Further reading
The term "negative utilitarianism" was introduced by R. N. Smart in his 1958 reply to Karl Popper's book The Open Society and Its Enemies, published in 1945. In the book, Popper emphasizes the importance of preventing suffering in public policy. The ideas in negative utilitarianism have similarities with ancient traditions such as Jainism and Buddhism. Ancient Greek philosopher Hegesias of Cyrene has been said to be "one of the earliest exponents of NU [Negative Utilitarianism]." In more recent times, ideas similar to negative utilitarianism can be found in the works of 19th century psychologist Edmund Gurney who wrote:
Enough suffering will always remain to make the question of the desirability . . . of their sojourn on earth a question which numbers will answer . . . in the negative. . . . When we forget pain, or underestimate it, or talk about people 'getting used to it', we are really so far losing sight of what the universe, which we wish to conceive adequately, really is.
Versions of negative utilitarianism
Like other kinds of utilitarianism, negative utilitarianism can take many forms depending on what specific claims are taken to constitute the theory. For example, negative preference utilitarianism says that the utility of an outcome depends on frustrated and satisfied preferences. Negative hedonistic utilitarianism thinks of utility in terms of hedonic mental states such as suffering and unpleasantness. Negative Average Preference Utilitarianism  makes the same assumptions on what is good as negative preference utilitarianism, but states that the average number (per individual) number of preferences frustrated should be minimized. Versions of (negative) utilitarianism can also differ based on whether the actual or expected consequences matter, and whether the aim is stated in terms of the average outcome among individuals or the total net utility (or lack of disutility) among them. Negative utilitarianism can aim either to optimize the value of the outcome or it can be a satisficing negative utilitarianism, according to which an action ought to be taken if and only if the outcome would be sufficiently valuable (or have sufficiently low disvalue). A key way in which negative utilitarianisms can differ from one another is with respect to how much weight they give to negative well-being (disutility) compared to positive well-being (positive utility). This is a key area of variation because the key difference between negative utilitarianism and non-negative kinds of utilitarianism is that negative utilitarianism gives more weight to negative well-being.
The weight of evil (disutility)
Philosophers Gustaf Arrhenius and Krister Bykvist develop a taxonomy of negative utilitarian views based on how the views weigh disutility against positive utility. In total, they distinguish among 16 kinds of negative utilitarianism. They first distinguish between strong negativism and weak negativism. Strong negativism "give all weight to disutility" and weak negativism "give some weight to positive utility, but more weight to disutility." The most commonly discussed subtypes are probably two versions of weak negative utilitarianism called 'lexical' and 'lexical threshold' negative utilitarianism. According to 'lexical' negative utilitarianism, positive utility gets weight only when outcomes are equal with respect to disutility. That is, positive utility functions as a tiebreaker in that it determines which outcome is better (or less bad) when the outcomes considered have equal disutility. 'Lexical threshold' negative utilitarianism says that there is some disutility, for instance some extreme suffering, such that no positive utility can counterbalance it. 'Consent-based' negative utilitarianism is a specification of lexical threshold negative utilitarianism, which specifies where the threshold should be located. It says that if an individual is suffering and would at that moment not "agree to continue the suffering in order to obtain something else in the future" then the suffering cannot be outweighed by any happiness.
Other distinctions among versions of negative utilitarianism
Thomas Metzinger proposes the "principle of negative utilitarianism", which is the broad idea that suffering should be minimized when possible. Mario Bunge writes about negative utilitarianism in his Treatise on Basic Philosophy but in a different sense than most others. In Bunge's sense, negative utilitarianism is about not harming. In contrast, most other discussion of negative utilitarianism takes it to imply a duty both not to harm and to help (at least in the sense of reducing negative well-being).
The benevolent world-exploder
In the 1958 article where R. N. Smart introduced the term "negative utilitarianism", he argued against it, stating that negative utilitarianism would entail that a ruler who is able to instantly and painlessly destroy the human race, "a benevolent world-exploder", would have a duty to do so. This is the most famous argument against negative utilitarianism, and it is directed against sufficiently strong versions of negative utilitarianism. Many authors have endorsed this argument, and some have presented counterarguments against it. Below are replies to this argument that have been presented and discussed.
Cooperation between different value systems
One possible reply to this argument is that only a naive interpretation of negative utilitarianism would endorse world destruction. The conclusion can be mitigated by pointing out the importance of cooperation between different value systems. There are good consequentialist reasons why one should be cooperative towards other value systems and it is particularly important to avoid doing something harmful to other value systems. The destruction of the world would strongly violate many other value systems and endorsing it would therefore be uncooperative. Since there are many ways to reduce suffering which do not infringe on other value systems, it makes sense for negative utilitarians to focus on these options. In an extended interpretation of negative utilitarianism, cooperation with other value systems is considered and the conclusion is that it is better to reduce suffering without violating other value systems.
Eliminating vs. reducing disutility
Another reply to the benevolent world-exploder argument is that it does not distinguish between eliminating and reducing negative well-being, and that negative utilitarianism should plausibly be formulated in terms of reducing and not eliminating. A counterargument to that reply is that elimination is a form of reduction, similar to how zero is a number.
Attempting world destruction would be counterproductive
Several philosophers have argued that to try to destroy the world (or to kill many people) would be counterproductive from a negative utilitarian perspective. One such argument is provided by David Pearce, who says that "planning and implementing the extinction of all sentient life couldn't be undertaken painlessly. Even contemplating such an enterprise would provoke distress. Thus a negative utilitarian is not compelled to argue for the apocalyptic solution." Instead, Pearce advocates the use of biotechnology to phase out the biology of suffering throughout the living world, and he says that "life-long happiness can be genetically pre-programmed." A similar reply to the similar claim that negative utilitarianism would imply that we should kill off the miserable and needy is that we rarely face policy choices and that "anyway there are excellent utilitarian reasons for avoiding such a policy, since people would find out about it and become even more miserable and fearful." The Negative Utilitarianism FAQ's answer to question "3.2 Should NUs try to increase extinction risk?" begins with "No, that would be very bad even by NU standards."
Life could evolve again in a worse way
Some replies to the benevolent world exploder-argument take the form that even if the world were destroyed, that would or might be bad from a negative utilitarian perspective. One such reply provided by John W. N. Watkins is that even if life were destroyed, life could evolve again, perhaps in a worse way. So the world-exploder would need to destroy the possibility of life, but that is in principle beyond human power. To this, J. J. C. Smart replies,
I am also a little puzzled by Watkin's remark that the pain minimizer would have to destroy the very possibility of life. If the sentient forms of life were totally destroyed, it might be that the sentient forms would be most unlikely to evolve. This is on the supposition, held by some experts, that the evolution of higher forms of life on earth depended on a lot of lucky accidents. If this is not the case, then the benevolent world destroyer should ensure that all forms of life are destroyed, even bacteria and plants and insects, but should this be impossible the world destroyer might have at least ensured a pain free globe for hundreds of millions of years to come. In any case my brother's example was of a world exploder, and I think this would ensure the destruction of all life on earth. Of course there might be sentient life on planets of distant stars. No doubt the world exploder can do nothing about this, even with the resources of a future physics, but his or her negative utilitarian duty would not be to do the impossible, but would be to minimize suffering as much as lies within his or her power.
Getting killed would be a great evil
Another related reply to the world-exploder argument is that getting killed would be a great evil. Erich Kadlec defends negative utilitarianism and replies to the benevolent world-exploder argument (in part) as follows: "He [R. N. Smart] also dispenses with the generally known fact that all people (with a few exceptions in extreme situations) like to live and would consider being killed not a benefit but as the greatest evil done to them."
Negative preference utilitarianism has a preferentialist conception of well-being. That is, it is bad for an individual to get his aversions fulfilled (or preferences frustrated), and depending on the version of negative utilitarianism, it may also be good for him to get his preferences satisfied. A negative utilitarian with such a conception of well-being, or whose conception of well-being includes such a preferentialist component, could reply to the benevolent world-exploder argument by saying that the explosion would be bad because it would fulfill many individuals' aversions. Arrhenius and Bykvist provide two criticisms of this reply. First, it could be claimed that frustrated preferences require that someone exists who has the frustrated preference. But if everyone is dead there are no preferences and hence no badness. Second, even if a world-explosion would involve frustrated preferences that would be bad from a negative preference utilitarian perspective, such a negative utilitarian should still favor it as the lesser of two evils compared to all the frustrated preferences that would likely exist if the world continued to exist.
The Negative Utilitarianism FAQ suggests two replies to Arrhenius and Bykvist's first type of criticism (the criticism that if no one exists anymore then there are no frustrated preferences anymore): The first reply is that past preferences count, even if the individual who held them no longer exists. The second is that "instead of counting past preferences, one could look at the matter in terms of life-goals. The earlier the death of a person who wants to go on living, the more unfulfilled her life-goal." The Negative Utilitarianism FAQ also replies to Arrhenius and Bykvist's second type of criticism. The reply is (in part) that the criticism relies on the empirical premise that there would be more frustrated preferences in the future if the world continued to exist than if the world was destroyed. But that negative preference utilitarianism would say that extinction would be better (in theory), assuming that premise, should not count substantially against the theory, because for any view on population ethics that assigns disvalue to something, one can imagine future scenarios such that extinction would be better according to the given view.
Combining negative utilitarianism with rights
A part of Clark Wolf's response to the benevolent world-exploder objection is that negative utilitarianism can be combined with a theory of rights. He says:
A more direct way to address this problem would be to incorporate a theory of rights, stipulating that in general, policy makers simply have no right to make decisions about whether the lives of others are worth living, or whether they should live or die. Since it is clear that policy makers have no right to kill off the miserable and destitute, this response gains support from our moral intuitions.
Toby Ord provides a critique of negative utilitarianism in his essay "Why I'm Not a Negative Utilitarian", to which David Pearce and Bruno Contestabile have replied. Other critical views of negative utilitarianism are provided by Thaddeus Metz, Christopher Belshaw, and Ingmar Persson. On the other hand, Joseph Mendola develops a modification of utilitarianism, and he says that his principle
is a kind of maximin rule.... The principle also resembles a form of utilitarianism which is familiar from the work of Popper and the Smart brothers, negative utilitarianism. That too suggests we should concern ourselves before all else with the elimination of pain.
Professor Henry Hiz writes favorably of negative utilitarianism. Fabian Fricke published the German article "Verschiedene Versionen des negativen Utilitarismus". In book format, Jonathan Leighton has defended 'negative utilitarianism plus', which holds the reduction of suffering to be of highest importance, while also valuing the continued existence of sentient beings.
- Negative consequentialism
- Wild animal suffering
- David Benatar
- For example, Leslie 1998, p. 12: "'Negative utilitarianism' is concerned mainly or entirely with reducing evils rather than with maximizing goods." The example unpleasant experiences is an example based on a hedonistic theory of well-being, according to which pleasant experiences are good for individuals and unpleasant experiences are bad for individuals. But there are other theories of well-being and negative utilitarianism need not adopt a hedonistic theory.
- Bykvist 2009, p. 19: "The whole family of utilitarian theories is captured by the equation: Utilitarianism = Consequentialism (nothing but the values of outcomes matter for the rightness of actions) + Welfarism (nothing but well-being matters for the value of outcomes)."
- Bykvist 2009, chpt. 4.
- Smart 1958.
- Arrhenius & Bykvist 1995, p. 29 says that strong versions of negative utilitarianism "give all weight to disutility" and weak versions "give some weight to positive utility, but more weight to disutility." Arrhenius & Bykvist 1995, p. 115: “Our point of departure was the firm intuition that unhappiness and suffering have greater weight than happiness. By taking this stand we revealed ourselves as members of the negative utilitarian family.” Ord 2013: “NU [negative utilitarianism] comes in several flavours, which I will outline later, but the basic thrust is that an act is morally right if and only if it leads to less suffering than any available alternative. Unlike Classical Utilitarianism, positive experiences such as pleasure or happiness are either given no weight, or at least a lot less weight.”
- Negative Utilitarianism FAQ 2015.
- Arrhenius & Bykvist 1995, p. 31.
- Smart 1958, p. 542.
- Smart 1958, p. 542: "Professor Popper has proposed a negative formulation of the utilitarian principle, so that we should replace ‘Aim at the greatest amount of happiness for the greatest number’ by ‘The least amount of avoidable suffering for all’. He says: ‘It adds to the clarity of ethics if we formulate our demands negatively, i.e. if we demand the elimination of suffering rather than the promotion of happiness’. However, one may reply to negative utilitarianism..."
- For example, Popper wrote, "I suggest, for this reason, to replace the utilitarian formula ‘Aim at the greatest amount of happiness for the greatest number’, or briefly, ‘Maximize happiness’ by the formula ‘The least amount of avoidable suffering for all’, or briefly, ‘Minimize suffering’. Popper, Karl (2012). The Open Society and Its Enemies. Routledge. p. 548. ISBN 978-0415610216. Popper claimed that "there is, from the ethical point of view, no symmetry between suffering and happiness, or between pain and pleasure... In my opinion human suffering makes a direct moral appeal, namely, the appeal for help, while there is no similar call to increase the happiness of a man who is doing well anyway. A further criticism of the Utilitarian formula "Maximize pleasure" is that it assumes a continuous pleasure-pain scale which allows us to treat degrees of pain as negative degrees of pleasure. But, from the moral point of view, pain cannot be outweighed by pleasure, and especially not one man's pain by another man's pleasure. Instead of the greatest happiness for the greatest number, one should demand, more modestly, the least amount of avoidable suffering for all..." Popper, Karl (2002). The Open Society and Its Enemies: Volume 1: The Spell of Plato. Routledge. pp. 284–285. ISBN 978-0415237314.
- Contestabile 2014, p. 298: "Negative utilitarianism and Buddhism share the following intuitions: Negative utilitarianism—understood as an umbrella term—models the asymmetry between suffering and happiness and therefore accords with the Buddhist intuition of universal compassion. The Noble Truths of Buddhism accord with the negative utilitarian intuition that (global) suffering cannot be compensated by happiness. Some forms of Buddhism and negative utilitarianism share the intuition that non-existence is a perfect state." Goodman 2009, p. 101: “Negative utilitarianism shares with Buddhism a strong focus on alleviating the suffering of beings.”
- Keown 1992, p. 175: “one of the earliest exponents of NU, Hegesias...”
- "Edmund Gurney (1847 - 88)".
- Chao, Roger (March 2012). "Negative Average Preference Utilitarianism" (PDF). Journal of Philosophy of Life. 2: 66 – via pdf.
- Sinnott-Armstrong 2014 provides an overview of the many ways in which consequentialism can be varied. Since utilitarianism (and negative utilitarianism) is a kind of consequentialism, much of it applies to utilitarianism and negative utilitarianism as well. Section 1. "Classic Utilitarianism" shows the many distinct and variable claims that make up Classic Utilitarianism.
- Bykvist 2009, p. 102, states satisficing utilitarianism as follows: "Satisficing utilitarianism An action ought to be done if and only if it would bring about a sufficient level of total well-being."
- They write that they distinguish among kinds of 'negative utilitarianism': "Our point of departure was the firm intuition that unhappiness and suffering have greater weight than happiness. By taking this stand we revealed ourselves as members of the negative utilitarian family. The problem was then to find out which members of this family we want to join, and to spell out why we do not want to be as some of our siblings." Arrhenius & Bykvist 1995, p. 115. The taxonomy is phrased in terms of 'negativisms,' which appear to be the same as 'negativist' and 'negative' utilitarianisms: "we believe that disutility has greater weight than utility. The overall aim with this part of our essay is to give an account of this weight, which means that we shall try to formulate a welfarist act-consequentialism that takes seriously the weight of disutility. In other words, we are looking for an acceptable negativist utilitarianism." Arrhenius & Bykvist 1995, p. 20.
- Arrhenius & Bykvist 1995, pp. 30,38.
- Arrhenius & Bykvist 1995, p. 29.
- Arrhenius & Bykvist 1995, p. 39: "The claim that disutility has greater weight can now be expressed by letting the disutilities have greater lexical weight. But still the utility has some weight in the sense that if the disutilities are the same in the alternatives, and hence we cannot minimise the disutility any further, then we ought to maximise the utility. Depending on what kinds of disutilities we choose in establishing this order, we get different lexical negativisms."
- Ord 2013: "Lexical Threshold NU Suffering and happiness both count, but there is some amount of suffering that no amount of happiness can outweigh."
- Brian Tomasik formulated and advocated consent-based negative utilitarianism. He writes, "would the person-moment suffering agree to continue the suffering in order to obtain something else in the future? If yes, then the suffering doesn't pass the threshold of unbearableness and thus can be outweighed by happiness." Tomasik 2015. See section “Consent-based negative utilitarianism?” The ‘person-moment’ means the person in the moment of suffering, as opposed to before or after the suffering occurred.
- Metzinger 2003, p. 622: “In terms of a fundamental solidarity of all suffering beings against suffering, something that almost all of us should be able to agree on is what I will term the “principle of negative utilitarianism”: Whatever else our exact ethical commitments and specific positive goals are, we can and should certainly all agree that, in principle, and whenever possible, the overall amount of conscious suffering in all beings capable of conscious suffering should be minimized. I know that it is impossible to give any truly conclusive argument in favor of this principle. And, of course, there exist all kinds of theoretical complications—for example, individual rights, long-term preferences, and epistemic indeterminacy. But the underlying intuition is something that can be shared by almost everybody: We can all agree that no additional suffering should be created without need. Albert Camus once spoke about the solidarity of all finite beings against death, and in just the same sense there should be a solidarity of all sentient beings capable of suffering against suffering. Out of this solidarity we should not do anything that would increase the overall amount of suffering and confusion in the universe—let alone something that highly likely will have this effect right from the beginning.”
- Bunge 1989, p. 230: "By recommending passivity it [negative utilitarianism] condones evil. The spectator who watches impassively a hooligan attacking an old woman, and the citizen who does not bother to vote, comply with negative utilitarianism and thereby tolerate evil."
- See for example Pearce & Negative Utilitarianism: Why Be Negative?
- Smart 1958, p. 542: "Suppose that a ruler controls a weapon capable of instantly and painlessly destroying the human race. Now it is empirically certain that there would be some suffering before all those alive on any proposed destruction day were to die in the natural course of events. Consequently the use of the weapon is bound to diminish suffering, and would be the ruler's duty on NU grounds." For his use of the term ‘the benevolent world-exploder’ see page 543.
- That is, the argument is directed against strong versions of negative utilitarainaism that prescribe only reducing negative well-being, as well as weak versions that are sufficiently close to strong negative utilitarianism. Such weak versions would be those that, although they give weight to both negative and positive well-being, give sufficiently much more the weight to negative well-being, so that they would have the same implications as strong versions in relevant situations.
- For example, Bunge 1989, p. 230: "Negative utilitarianism ... is open to the following objections.... Fourthly, the most expeditious way of implementing the doctrine would be to exterminate humankind, for then human suffering would cease altogether (R. N. Smart 1958)." Heyd 1992, p. 60: "Negative utilitarianism, which seems promising in guiding us in genethics, also urges (at least in its impersonal version) paradoxical (and to some, morally abhorrent) solutions to the miseries of humanity. Primarily it recommends the painless annihilation of all humanity—either by the collective suicide of all actual beings, or by total abstention from procreation by one generation (Smart 1958, 542-543)." Ord 2013: "R. N. Smart wrote a response  in which he christened the principle 'Negative Utilitarianism' and showed a major unattractive consequence. A thorough going Negative Utilitarian would support the destruction of the world (even by violent means) as the suffering involved would be small compared to the suffering in everyday life in the world."
- "Gains from Trade through Compromise – Foundational Research Institute". foundational-research.org. Retrieved 2015-12-17.
- "Reasons to Be Nice to Other Value Systems – Foundational Research Institute". foundational-research.org. Retrieved 2015-12-17.
- "Negative Utilitarianism FAQ".
- This is essentially H. B. Acton's reply. Acton & Watkins 1963, p. 84: "Eliminating suffering is not the same thing as reducing it or as arriving at 'the least amount of avoidable suffering for all', and it is the latter, not the former, that might, with some plausibility, be regarded as a possible substitute for the more usual form of utilitarianism. Would not, then, the destroyer imagined by Smart be making a terrible mistake through failing to notice the difference between eliminating and reducing?"
- This is J. J. C. Smart's reply to Acton. J. J. C. Smart agrees with his brother R. N. Smart that "if we made the minimization of misery our sole ultimate ethical principle ... we should approve of a tyrannical but benevolent world exploder." Smart 1973, p. 29 J. J. C. Smart replies to Acton that "surely eliminating is a case of reducing – the best case of all, the negative utilitarian would say. In suggesting that eliminating is not reducing, Acton seems to me to be like a person who says that zero is not a number." Smart 1989, p. 44
- Pearce 2005.
- Pearce & Negative Utilitarianism: Why Be Negative?.
- Clark Wolf proposes and defends ‘negative critical level utilitarianism’ in the context of social choice and population choices, which says that "population choices should be guided by an aim to minimize suffering and deprivation" (Wolf 1996, p. 273). He brings up the possible objection to his principle that "it might occur to someone that the best way to minimize current suffering and deprivation would be to quietly, secretly, and painlessly kill off all of those who are miserable and needy" (Wolf 1996, p. 278). A part of his reply is that "die hard utilitarians could argue that we rarely face such a policy choice, and that anyway there are excellent utilitarian reasons for avoiding such a policy, since people would find out about it and become even more miserable and fearful" (Wolf 1996, p. 278).
- John W. N. Watkins describes himself as "a sort of negative utilitarian" (Acton & Watkins 1963, p. 95). He replies to R. N. Smart that "even if all life were destroyed, in due course living matter might emerge from the slime once more, and the evolutionary process start up again—this time accompanied, perhaps, by even more pain than would have accompanied the continued existence of the human race. So the pain minimiser would need to destroy the very possibility of life. And I like to think that this is something which is in principle beyond human power" (Acton & Watkins 1963, p. 96).
- Smart 1989, pp. 44-45.
- Kadlec & 2008 110.
- "A preferentialist could, for example, claim that most people now living prefer to live, and that these preferences must be counted when elimination is at stake. So, the elimination results in a lot of frustrated preferences, and we must balance the evil ofthis against the evil of the unhappiness in the future of humanity." (Arrhenius & Bykvist 1995, pp. 31–32)
- Arrhenius & Bykvist 1995, p. 32.
- "NIPU [negative ideal preference utilitarianism] isn’t about minimizing the amount of unsatisfied preferences that currently exist, but rather about minimizing the total amount of unsatisfied preferences in the (space-time) universe. This includes past preferences." (Negative Utilitarianism FAQ 2015)
- Negative Utilitarianism FAQ 2015. See section "2.1.5 Back to destroying the world, doesn’t NIPU still imply that extinction would be best, because if there will be a lot of people in the future, their unsatisfied preferences combined are worse than the preferences being thwarted by extinction?"
- Wolf 1996, p. 278.
- Contestabile & Negative Utilitarianism and Justice.
- Rawls 1958, p. 174.
- Ord 2013.
- Pearce & A response to Toby Ord's essay.
- Contestabile & Why I’m (Not) a Negative Utilitarian – A Review of Toby Ord’s Essay.
- Metz 2012, pp. 1–2: "Negative utilitarianism is well-known for entailing anti-natalism as well as pro-mortalism, the view that it is often prudent for individuals to kill themselves and often right for them to kill others, even without their consent. It pretty clearly has these implications if one can kill oneself or others painlessly, but probably does so even if there would be terror beforehand; for there would be terror regardless of when death comes, and if death were to come sooner rather than later, then additional bads that would have been expected in the course of a life would be nipped in the bud."
- Belshaw 2012, p. 118: "Negative utilitarianism can be plucked from the shelf, but there is no good reason to suppose it true. And were it true, it would take us too far, generating not only anti-natalism but straightaway also its pro-mortalist neighbour."
- Persson 2009, p. 38: “negative utilitarianism seems implausible, as is shown by an argument sketched by McMahan, on the basis of an argument originally put forward by Richard Sikora (1978). This argument turns on the observation that if what would be bad for individuals in life is a reason against conceiving them, but what would be good for them is no reason in favour of conceiving them, then, as far as those individuals are concerned, it is wrong to conceive them, however much good their lives will contain, provided that they will also contain something that is bad for them. This seems clearly absurd.”
- Mendola 1990, p. 86.
- Hiz 1992, p. 423: "Utilitarianism failed, but what is sometimes called ‘negative utilitarianism’ avoids many of the shortcomings of classical utilitarianism. It is a good candidate for an ethics that expresses the Enlightenment tradition."
- Fricke 2002.
- Leighton 2011.
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- Contestabile, Bruno (2015). "Negative Utilitarianism and Justice".
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- Goodman, Charles (2009). Consequences of Compassion: An Interpretation and Defense of Buddhist Ethics. Oxford: Oxford University Press.
- Heyd, David (1992). Genethics: Moral Issues in the Creation of People. Berkeley: University of California Press.
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- Kadlec, Erich (2008). "Popper's 'Negative Utilitarianism': From Utopia to Reality.". In Peter Markl and Erich Kadlec, eds., Karl Popper's Response to 1938. Frankfurt am Main: Peter Lang. pp. 107–21.
- Keown, Damien (1992). The Nature of Buddhist Ethics. Macmillan.
- Leighton, Jonathan (2011). The Battle for Compassion: Ethics in an Apathetic Universe. Algora Publishing.
- Leslie, John (1998). The End of the World: The Science and Ethics of Human Extinction, Revised ed. Routledge.
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