From the 1992 Rio Earth Summit to the 2009 Copenhagen Climate Conference there was a concerted international effort to stop climate change. This book is about what climate change is, why we failed to stop it, and why it still matters what we do.

When people use a resource without a co-ordinated plan the result is often a tragedy of the commons in which the resource is depleted. Many environmental resources display the characteristics of a developing tragedy of the commons. Many believe that each person is ethically obligated to reduce use of the commons to the sustainable level. I argue that this is mistaken. In a tragedy of the commons there is no reasonable expectation that individual, voluntary action will succeed. Our obligation is (...) not fruitlessly to reduce individual use, but to support a collective agreement to reduce everyone's use to the sustainable level. (shrink)

“Since the actions I perform as an individual only have an inconsequential effect on the threat of climate change,” a common argument goes, “it cannot be morally wrong for me to take my car to work everyday or refuse to recycle.” This argument has received a lot of scorn from philosophers over the years, but has actually been defended in some recent articles. A more systematic treatment of a central set of related issues shows how maneuvering around these issues is (...) no easy philosophical task. In the end, it appears, the argument from inconsequentialism indeed is correct in typical cases, but there are also important qualificatory considerations. (shrink)

Climate change is a global problem that is predominantly an intergenerational conflict, and which takes place in a setting where our ethical impulses are weak. This "perfect moral storm" poses a profound challenge to humanity. This book explains how the "perfect storm" metaphor makes sense of our current malaise, and why a better ethics can help see our way out.

This is a major work in moral philosophy, the long-awaited follow-up to Parfit's 1984 classic Reasons and Persons, a landmark of twentieth-century philosophy. Parfit now presents a powerful new treatment of reasons and a critical examination of the most prominent systematic moral theories, leading to his own ground-breaking conclusion.

The contrast typically made between utilitarianism and virtue theory is overdrawn. Utilitarianism is a universal emulator: it implies that we should lie, cheat, steal, even appropriate Aristotle, when that is what brings about the best outcomes. In some cases and in some worlds it is best for us to focus as precisely as possible on individual acts. In other cases and worlds it is best for us to be concerned with character traits. Global environmental change leads to concerns about character (...) because the best results will be produced by generally uncoupling my behavior from that of others. Thus, in this case and in this world, utilitarians should be virtue theorists. (shrink)

Moral puzzles about actions which bring about very small or what are said to be imperceptible harms or benefits for each of a large number of people are well known. Less well known is an argument by Warren Quinn that standard theories of rationality can lead an agent to end up torturing himself or herself in a completely foreseeable way, and that this shows that standard theories of rationality need to be revised. We show where Quinn's argument goes wrong, and (...) apply this to the moral puzzles. (shrink)

Derek Parfit presents the third volume of On What Matters, his landmark work of moral philosophy. Parfit develops further his influential treatment of reasons, normativity, the meaning of moral discourse, and the status of morality. He engages with his critics, and shows the way to resolution of their differences.

A survey of various candidates shows that there is no defensible moral principle that shows that individuals have an obligation to reduce their greenhouse gas emissions.

Many environmental problems are longitudinal collective action problems. They arise from the cumulative unintended effects of a vast amount of seemingly insignificant decisions and actions by individuals who are unknown to each other and distant from each other. Such problems are likely to be effectively addressed only by an enormous number of individuals each making a nearly insignificant contribution to resolving them. However, when a person’s making such a contribution appears to require sacrifice or costs, the problem of inconsequentialism arises: (...) given that a person’s contribution, although needed (albeit not necessary), is nearly inconsequential to addressing the problem and may require some cost from the standpoint of the person’s own life, why should the person make the effort, particularly when it is uncertain (or even unlikely) whether others will do so? In this article I argue that justifications for making the effort to respond to longitudinal collective action environmental problems are, on the whole, particularly well supported by virtue-oriented normative theories, on which character traits are evaluated as virtues and vices consequentially or teleologically and actions are evaluated in terms of virtues and vices. If ethical theories are to be assessed on their theoretical and practical adequacy, and if providing a compelling response to the problem of inconsequentialism is an instance of such adequacy, then this is a reason for preferring virtue-oriented ethical theory over non-virtue-oriented ethical theories, such as Kantian, act utilitarian, and global utilitarian theories. (shrink)

Several authors have argued that act–utilitarianism cannot provide an adequate critique of buying meat because a single meat purchase will not actually cause more farm animals to be raised or slaughtered. Thus, regardless of whether or not the production of meat is inhumane to animals, someone who buys meat is doing nothing wrong. This argument fails to show that meat purchases are morally permissible, however, because it assumes that act–utilitarians would use actual utility in their decision to buy or not (...) to buy meat. I show that act–utilitarians cannot use actual utility as a decision procedure and must instead use expected utility to prescribe or proscribe actions. I then demonstrate how expected utility can be applied to cases of contributory causation, where many people seem morally responsible for causing something to happen. Buying meat is one case of contributory causation where the probability of any single individual's affecting meat production is slight, but the expected disutility of affecting that production is substantial. Thus, in its expected utility form, act–utilitarianism defeats the ‘causal inefficacy’ defence of buying meat [1]. (shrink)