Animal rights the interests of the worse off more important than those of the better off. Another approach, virtue ethics, holds that in considering how to act we should consider the character of the actor, and what kind of moral agents we should be. Rosalind Hursthouse has suggested an approach to animal rights based on virtue ethics. Mark Rowlands has proposed a contractarian approach. Nussbaum (2004) writes that utilitarianism, starting with Jeremy Bentham and John Stuart Mill, has contributed more to the recognition of the moral status of animals than any other ethical theory. The utilitarian philosopher most associated with animal rights
Jeremy Bentham is defined by Bentham as physical as well as spiritual. Bentham writes about this principle as it manifests itself within the legislation of a society. He lays down a set of criteria for measuring the extent of pain or pleasure that a certain decision will create. The criteria are divided into the categories of intensity, duration, certainty, proximity, productiveness, purity, and extent. Using these measurements, he reviews the concept of punishment and when it should be used as far as whether a punishment will create more pleasure or more pain for a society. He calls for legislators to determine whether