 Kant had no comprehensive social philosophy. One might be tempted to claim that, in line with natural law theorists, Kant discusses natural rights related to some social institutions. One might read the first half of the “Doctrine of Right” as a social philosophy, since this half on “Private Right” discusses the rights of individuals relative to one another, in contrast to the second half on “Public Right” that discusses the rights of individuals relative to the state. Kant even offers an explanation of this difference by claiming that the opposite of state of nature is not a social but the civil condition, that is, a state (6:306). The state of nature can include voluntary societies (Kant mentions domestic relations in general) where there is no a priori obligation for individuals to enter them. This approach to Kant, however, is subject to some doubt, since he explicitly links all forms of property to the obligation to enter the civil condition (see section 5 above), and his discussion of marriage and family comes in the form of property relations akin to contract relations. It is thus not obvious how Kant’s explanations of these social institutions, which presuppose property relations, could apply to social philosophy independent of the state. Thus even if some form of family or household or property-like institutions could exist outside the civil condition, Kant does not discuss them.