  As we shall see, Marcus’ way of addressing the deliberative content problem is in one respect like Cicero’s: the characterization of right conduct comes from ideas about what justice demands, and the content of justice comes from outside Stoic ethics proper. In Marcus’ case, it comes from the idea that the cosmos is a city and that all rational beings are fellow-citizens of this city. The role of citizen brings with it certain conventional expectations of conduct which Marcus transfers to citizenship of the cosmopolis.