Bentham gave utilitarianism its name and put it on the map, both as a philosophical theory and as a reforming social and political doctrine. In all of his philosophizing, Bentham was most fundamentally concerned with its relevance for law and, ultimately, for a distinctive kind of legal, social, and political reform. Bentham was unalterably opposed to legal and political doctrines whose only grounding was in tradition and any common sense tradition informs. This extended also to his views about morality. His defense of the principle of is not grounded, as Sidgwick will argue any moral principle must be, in intuition. But neither does Bentham ground his utilitarianism in an empiricist-naturalist metaethics, as do Cumberland and Mill, though his metaphysics certainly has that character. Bentham holds that the ultimate grounding of utilitarianism must be political. According to Bentham, the utility principle is the only one that can play the role that a moral principle must be able to play in informed noncoercive public debate. In this way, Bentham anticipates Rawls’s “political liberalism.” This chapter argues that Bentham could accept Rawls’s an emended version of Rawls’s slogan: “the principle of utility: political, not metaphysical.”