The purpose of this paper is to examine the distinction between "negative" and "positive" duties. Special attention will be given to certain criticism raised against this distinction by Michael Tooley.

The moral significance of preserving natural environments is not entirely an issue of rights and social utility, for a person’s attitude toward nature may be importantly connected with virtues or human excellences. The question is, “What sort of person would destroy the natural environment--or even see its value solely in cost/benefit terms?” The answer I suggest is that willingness to do so may well reveal the absence of traits which are a natural basis for a proper humility, self-acceptance, gratitude, and (...) appreciation of the good in others. (shrink)

By “case,” I mean a proxy for some state of affairs, event, sequence of events, or other fact. A case may be as short as a phrase (“a promise to your dying grandfather”) or (in principle, at least) longer than War and Peace. A case may consist of words (as in the typical philosophical example) or have a more dramatic form, such as a movie, stage performance, or computer simulation. Imaginary cases plainly have an important role in contemporary ethics, especially (...) in applied or practical ethics. This paper is a systematic critique of imaginary cases in ethics (what Kant would have called a “prolegomenon” to their use). There are two main parts. The first explains what it is to imagine a case and what limits there are to what can be imagined. The limits of imagination are, in general, determined by the purpose to which the case is to be put. The second part distinguishes nine uses of imaginary cases: rhetorical; probative (subdivided into counterexample, proof of possibility, and pattern-proving); and heuristic (subdivided into illustrative, experiment in theory, insight-sharpening, commitment-mapping, and exploring reasoning process). Some of these uses are (more or less) unobjectionable (whether the particular case succeeds or fails in its objective) but some require special care or outright avoidance. I give examples of how philosophers and other ethicists would be better off if they were more cautious in their use of imaginary cases (including some classic examples, such as Nozick’s book thruster and Thompson’s famous violinist). This paper is especially concerned with the use of imaginary cases in contemporary defenses of torture. (shrink)

The last person, or people, argument is often assumed to be a potent weapon against a purely instrumental attitude toward nature, for it is said to imply the permissible destruction of nature under certain circumstances. I distinguish between three types of instrumentalism—strong instrumentalism and two forms of weak instrumentalism:, which includes the psychological and aesthetic use ofnature, and, which focuses on the public service use of nature—and examine them in terms of two scenarios, the après moi, le déluge and the (...) “ultimate humanization of nature” scenarios. With regard to the first, I show that LPA is irrelevant to all the three versions of instrumentalism. With regard to the second scenario, I show that even though it is redundant insofar as is concerned and irrelevant insofar as is concerned, it is, surprisingly, effective against, despite the fact that as a form of weak instrumentalism it is not the target of LPA. In addition, I examine the implications of LPA for the three variants when it is applied to the preservation rather than the destruction of nature and conclude that LPA is effective against and, but not as effective against, which can recognize a permission, though not a duty, to save nature. (shrink)

Environmental ethics is the discipline in philosophy that studies the moral relationship of human beings to, and also the value and moral status of, the environment and its nonhuman contents. This entry covers: (1) the challenge of environmental ethics to the anthropocentrism (i.e., humancenteredness) embedded in traditional western ethical thinking; (2) the early development of the discipline in the 1960s and 1970s; (3) the connection of deep ecology, feminist environmental ethics, and social ecology to politics; (4) the attempt to apply (...) traditional ethical theories, including consequentialism, deontology, and virtue ethics, to support contemporary environmental concerns; and (5) the focus of environmental literature on wilderness, and possible future developments of the discipline. (shrink)

Environmentalists frequently urge restraints on human activity because that activity threatens the existence of some species or other. The author aims to find out how much strength there is in the argument that it is wrong, or at least prima facie wrong, to destroy species. The question is whether there is any value in species preservation over and above the consequences species preservation has for individual members of species. That species preservation is instrumentally valuable, the aesthetic object argument, and the (...) intrinsic value of species preservation, as well as the claimed need for a new environmental ethic are considered. (shrink)