 Both Zeno and Chrysippus wrote works in the Platonic genre entitled Republic, neither of which survives in full. (So too, reportedly, had Diogenes the Cynic.) Zeno’s was written as a young man, allegedly under Cynic influence, rejecting the use of money in the characteristic Cynic vein. His portrait of the republic combines the Stoic idea of a natural law by which human conduct is harmonized with cosmic order, with a classical vision of politics in which a Platonic ideal of friendship through communist and sexual bonding (more erotic than familial for Zeno) persists (following Schofield 1991: 22–56). He seems to have adopted Plato’s prescription for the community of women and children, and at least some aspects of his insistence on the potential civic equality of men and women and political irrelevance of their anatomical differences. Humans share many characteristics and tendencies with other animals, and their initial impulse to form into society is a social rather than strictly political one: they are animated by a tendency to associate with those akin to themselves (the Stoic notion of oikeiôsis).