Gianfranco Pellegrino

Population ethics is defined and presented, and some of the paradoxes it encapsulates are spelled out. It is argued that the concept of the quality of a life or of a life worth living can- not be avoided if inquiry on many relevant ethical and political topics is to be pursued in a theoretically fitting mode. In particular, the article deals with the asymmetry between rea- sons for not creating unhappy lives and reasons for creating happy lives, the well-known repugnant conclusion and the paradox of mere addition

The main claim of this paper is that, contrary to the received view, Ross’ doctrine of resultance does not provide a premise in favour of non-naturalism, but rather makes possible a viable form of non-reductionist naturalism. This is argued mainly by viewing resultance as constitution, where resultant properties are constituted by those natural properties from which they result. Accordingly, resultant properties and their constitutive properties can be viewed as placed in the same ontological realm. However, to rule out reductionism, constitution is to be considered as not implying identity. Some arguments in favour of this view of constitution, above all in the moral realm, are presented in the last sections