 The formal cause of the city-state is its constitution (politeia). Aristotle defines the constitution as “a certain ordering of the inhabitants of the city-state” (III.1.1274b32–41). He also speaks of the constitution of a community as “the form of the compound” and argues that whether the community is the same over time depends on whether it has the same constitution (III.3.1276b1–11). The constitution is not a written document, but an immanent organizing principle, analogous to the soul of an organism. Hence, the constitution is also “the way of life” of the citizens (IV.11.1295a40–b1, VII.8.1328b1–2). Here the citizens are that minority of the resident population who possess full political rights (III.1.1275b17–20).