Practice, Change, History

The content of Political Philosophy is Practical rather than Theoretical, since it concerns Action, not an object of Cognition.  However, it not so obviously concerns changing the world, as opposed to interpreting it, as Marx posits the contrast.  For, while a Modern work typically constructs a model of a preferred society, and gets published with the implication that it be actualized, there is never the exhortation, as there is in the Communist Manifesto, to prepare for such a construction by destroying its preconditions, e. g. even Rousseau only advises change, without systematically incorporating it into his model, as Marx-Engels do.  In order to so incorporate it, the preconditions, too, must be systematically related to what is to supplant them, which requires a concept of History that embraces both and the transition from one to the other.  So, while the main works of Modern Political Philosophy concern Practice, as a-historical, they do not constitute efforts to change the world, even if they do not interpret it, either.