Abstract

Available from UMI in association with The British Library. Requires signed TDF. ;The thesis consists in the development and application of an ideal utilitarian moral theory. ;In chapter one, classical Mental State and modern Desire theories of prudential value are rejected. In chapter two, perfectionism is rejected and an alternative ideal utilitarian Objective List theory is set out. In chapter three, it is argued that prudential rationality requires maximization and temporal neutrality. The aggregation and incommensurability of values is discussed. In chapter four, it is argued that value alone gives rise to grounding reasons for action; the only values are prudential values; we are required to be personally as well as temporally neutral; moral rationality is maximizing. A problem arising when a certain form of incommensurability is combined with the notion of maximizing expected utility is examined. In chapter five, an intrapersonally indirect form of moral theory is defended. ;In the second, practical part of the thesis, the theory developed in the first part is applied to two moral problems: vegetarianism and future generations. In chapter six, the conclusion is that utilitarianism requires us to eat non-intensively-reared meat and to abstain from intensively reared meat. In chapter seven, population problems arising from Derek Parfit's work are considered in the light of the theory.