“During much of modern moral philosophy the predominant systematic theory has been some form of utilitarianism…Those who criticized them [i.e. the great utilitarians such as Hume, Smith and Mill] often did so on a much narrower front. They pointed out the obscurities of the principle of utility and noted the apparent incongruities between many of its implications and our moral sentiments. But they failed, I believe, to construct a workable and systematic moral conception to oppose it. The outcome is that we often seem forced to choose between utilitarianism and intuitionism. Most likely we finally settle upon a variant of the utility principle circumscribed and restricted in certain ad hoc ways by intuitionistic constraints. Such a view is not irrational; and there is no assurance that we can do better. But this is no reason not to try.”