Stephen M. Gardiner

The structure of Aristotelian virtue ethics has been misunderstood. Conventional wisdom has it that Aristotle, as indeed all of the major philosophers of ancient Greece, believed that the virtues are reciprocally entailing (RV): a person can have one of the virtues of character if and only if she has them all. But this is false. Instead, Aristotle distinguishes between a set of basic and a set of nonbasic virtues, and claims that only the basic virtues are reciprocally entailing. Furthermore, he believes that, given at least a moderate amount of external goods, the basic virtues are both necessary and sufficient for happiness. The nonbasic virtues are, then, separable from the basic virtues, and unnecessary for happiness, on Aristotle’s view. This insulates Aristotelian virtue ethics from the charge that it demands unreasonable knowledge and resources of agent aiming for happiness.

In the face of limited time and escalating impacts, some scientists and politicians are talking about attempting "grand technological interventions" into the Earth’s basic physical and biological systems ("geoengineering") to combat global warming. Early ideas include spraying particles into the stratosphere to block some incoming sunlight, or "enhancing" natural biological systems to withdraw carbon dioxide from the atmosphere at a higher rate. Such technologies are highly speculative and scientific development of them has barely begun. Nevertheless, it is widely recognized that geoengineering raises critical questions about who will control planetary interventions, and what responsibilities they will have. Central to these questions are issues of justice and political legitimacy. For instance, while some claim that climate risks are so severe that geoengineering must be attempted, others insist that the current global order is so unjust that interventions are highly likely to be illegitimate and exacerbate injustice. Such concerns are rarely discussed in the policy arena in any depth, or with academic rigor. Hence, this book gathers contributions from leading voices and rising stars in political philosophy to respond. It is essential reading for anyone puzzled about how geoengineering might promote or thwart the ends of justice in a dramatically changing world.

Climate change and similar problems pose a profound ethical challenge to existing institutions and theories. A human rights approach can play a role in addressing this challenge through its articulation, development and defense of a basic but often neglected ethical intuition. However, early work tends to overplay the initial advantages of human rights as such, and underestimate the role played by specific conceptions of human rights that are more controversial and ambitious. Moreover, current human rights paradigms are not directed to the central characteristics of the profound challenge. Given all this, a practical and theoretical reorientation is needed. This has implications for the evolving project of political philosophy on a global, intergenerational and ecological scale.

One prominent feature of contemporary virtue ethics is its insistence on the normative priority of the virtuous person. Another is its scepticism about the place of rules or principles in moral decision-making. But the Stoics seem paradoxical on this score. On the one hand, they are great proponents of the authority and privileged position of the sage; on the other, they see moral life as structured by an elaborate system of principles and rules. In this paper, I suggest a resolution to this apparent paradox through an examination of Seneca's discussion of the place of rules in moral life. I also explain how this Stoic position avoids some of the problems normally attributed to virtue ethics because of its insistence on the normative priority of the virtuous person.

Ethics is highly relevant to grand technological interventions into basic planetary systems on a global scale (roughly, “geoengineering”). Focusing on climate engineering, this chapter identifies a large number of salient concerns (e.g., welfare, rights, justice, political legitimacy) but argues that early policy framings (e.g., emergency, global public good) often marginalize these and so avoid important questions of justification. It also suggests that, since it is widely held that geoengineering has become a serious option mainly because of political inertia, there are important contextual issues, especially around the paradoxical question, “What should we do, ethically speaking, given that we have not done, and will continue not to do, what we should be doing?” Taking such issues seriously helps to explain why some regard geoengineering as ethically troubling and highlights the largely neglected threat of interventions that discriminate against future generations (“parochial geoengineering”). We should take seriously the risk that, far from being simply a welcome new tool for climate action, geoengineering may become yet another manifestation of the underlying problem.

In this paper, I discuss the International Commission on Radiological Protection’s (ICRP’s) ethical principles of radiological protection - and in particular their recent proposal to revise the recommendations based on those principles - from a particular point of view; namely, that of an outsider. I do this for two reasons. First, it seems to me that there is a strange mismatch between what the commission’s principles seem, from the outside, to demand, and how they have actually been interpreted. Second, understanding this mismatch sheds some light on the controversy surrounding the recent proposals.

The structure of Aristotelian virtue ethics has been misunderstood. Conventional wisdom has it that Aristotle, as indeed all of the major philosophers of ancient Greece, believed that the virtues are reciprocally entailing (RV): a person can have one of the virtues of character if and only if she has them all. But this is false. Instead, Aristotle distinguishes between a set of basic and a set of nonbasic virtues, and claims that only the basic virtues are reciprocally entailing. Furthermore, he believes that, given at least a moderate amount of external goods, the basic virtues are both necessary and sufficient for happiness. The nonbasic virtues are, then, separable from the basic virtues, and unnecessary for happiness, on Aristotle’s view. This insulates Aristotelian virtue ethics from the charge that it demands unreasonable knowledge and resources of agent aiming for happiness.