  A natural law moral theory will give an account of the way in which first principles of practical reason take on a moral force by being considered, not one by one but in their united (“integral”) directiveness. That integral directiveness is given specific (albeit highly general) articulation in principles such as the injunction to love one’s neighbor as oneself; or the Golden Rule of doing for others what you would want them to do for you and not doing to others what you would not have them do to you; or the “categorical imperatives” to respect, and treat as intrinsically valuable, humanity (the basic aspects of human flourishing) in oneself and in others, so that each of one’s communities is treated as a kingdom of ends—of persons each ends in themselves. Such high-level but far from contentless moral principles can be given further specificity in two ways (1) by identifying what, given some broadly stable features of human reality, they entail (see 1.2–4), and (2) by a rational but more or less non-deductive selection among alternative specifications, a selection named by Aquinas determinatio (plural, determinationes) (see 1.5). Political communities are a kind of institution whose rational status as a normally desirable and obligatory objective of and context for collaborative action (and forbearance) can easily be seen to be entailed by the foundational practical and moral principles. In such communities, the normal means for making the needed determinationes is the institution of governmental authority acting in the first instance through legislation and other forms of law-making, i.e., acting as a social-fact source of positive (posited) law.