 In times past, it was taken for granted that respect for human beings was a hierarchical notion; some humans, it was thought, have a higher moral standing and a greater moral worth than others and so are morally entitled to greater recognition respect. (Not just in times past – this is still the core of racism, sexism, and other forms of bigotry.) However, the modern understanding of respect for persons rests on the idea that all persons as such have a distinctive moral status in virtue of which we have unconditional obligations to regard and treat them in ways that are constrained by certain inviolable limits. This is sometimes expressed in terms of rights: all persons, it is said, have a fundamental moral right to respect simply because they are persons. Connected with this is the idea that all persons are fundamentally equal, despite the very many things that distinguish one individual from another. All persons, that is, have the moral standing of equality in the moral community and are equally worthy of and owed respect. Respect acknowledges the moral standing of equal persons as such and is also the key mode of valuing persons as persons.