(2006). Utilitarian Liberalism: Between Gray and Mill. Critical Review of International Social and Political Philosophy: Vol. 9, The Political Theory of John Gray, pp. 117-135.

In this study I analyse the performance of a democratic decision-making rule: the weighted majority rule. It assigns to each voter a number of votes that is proportional to her stakes in the decision. It has been shown that, for collective decisions with two options, the weighted majority rule in combination with self-interested voters maximises the common good when the latter is understood in terms of either the sum-total or prioritarian sum of the voters’ well-being. The main result of my (...) study is that this argument for the weighted majority rule — that it maximises the common good — can be improved along the following three main lines. (1) The argument can be adapted to other criteria of the common good, such as sufficientarian, maximin, leximin or non-welfarist criteria. I propose a generic argument for the collective optimality of the weighted majority rule that works for all of these criteria. (2) The assumption of self-interested voters can be relaxed. First, common-interest voters can be accommodated. Second, even if voters are less than fully competent in judging their self-interest or the common interest, the weighted majority rule is weakly collectively optimal, that is, it almost certainly maximises the common good given large numbers of voters. Third, even for smaller groups of voters, the weighted majority rule still has some attractive features. (3) The scope of the argument can be extended to decisions with more than two options. I state the conditions under which the weighted majority rule maximises the common good even in multi-option contexts. I also analyse the possibility and the detrimental effects of strategic voting. Furthermore, I argue that self-interested voters have reason to accept the weighted majority rule. (shrink)

Think of some environmentally unfriendly choices – taking the car instead of public transport or driving an SUV, just binning something recyclable, using lots of plastic bags, buying an enormous television, washing clothes in hot water, replacing something when you could make do with last year's model, heating rooms you don't use or leaving the heating high when you could put on another layer of clothing, flying for holidays, wasting food and water, eating a lot of beef, installing a patio (...) heater, maybe even, as some have said lately, owning a dog. Think about your own choices, instances in which you take an action which enlarges your carbon footprint when you might have done otherwise without much trouble. Is there consolation in the thought that it makes no difference what you do? (shrink)

There are two principles often found in environmental ethics – self-realisation and environmental preservation. I argue that these are two logically independent principles. An analysis of its essential features shows that the preservation principle should be based on actual consequentialism, for it is only the actual effects of our actions and policies that are important to the main issues of environmental preservation. Aldo Leopold's land ethic is found to be an example of a consequentialistic theory of environmental preservation.