On the dominant economic approach to environmental policy, environmental goods are conceptualised as forms of capital that provide services for human well-being. These services are assigned a monetary value to be weighed against the values of other goods and services. David Wiggins has offered a set of arguments against central assumptions about the nature of well-being, practical reason and ethical deliberation that underpin this dominant economic approach. In this paper I outline these arguments and consider their implications for understanding ethical demands across generations. The paper focuses, in particular, on their implications for understanding the nature and requirements of sustainability.

There is a longstanding and widely held view, often associated with Catholicism, that intrinsically nonprocreative human sex acts are intrinsically immoral. Some philosophers who hold this view, such as Edward Feser, claim that they can defend the view on purely philosophical grounds by relying on the perverted faculty argument. This paper argues that Feser's defense of the perverted faculty argument does not work because Feser fails to recognize the full implications of the species-dependence of natural goodness. By drawing on the work of Peter Geach and Philippa Foot, this paper presents a view of natural goodness that adequately accounts for the species-dependence of such goodness. Using this adequate account, the paper argues that at least some intrinsically nonprocreative human sex acts contribute to human flourishing.

I elucidate a frame of mind that David Wiggins calls respect for nature, which he understands as a special attitude toward a sui generis object, Nature as such. A person with this frame of mind takes nature to impose defeasible limits on her action, so that there are some courses of action that she will refuse even to entertain, except in circumstances of dire exigency. I defend the reasonableness of respect for nature, drawing upon considerations in Wiggins's work. But I argue that the natural systems that comprise the proper object of respect for nature are not sui generis; they are kindred, for practical reason, to complex social, political, and economic systems that we inhabit. I argue that it is reasonable to treat all such valuable systems with a similar respect, and that this respect is continuous with the respect we owe to persons and to valuable objects more generally. In all of these cases, respect consists, in part, in a disposition to defeasible constraints on practical deliberation.