I. Introduction Marx famously writes in the eleventh thesis on Feuerbach that “[t]he philosophers have only interpreted the world, in various ways; the point, however, is to change it.”¹ In “Marxism and Revolutionary Theory,” Cornelius Castoriadis recalls Marx's urgency when he announces that “we have arrived at the point where we have to choose between remaining Marxist and remaining revolutionaries, between faithfulness to a doctrine that … has ceased to fuel either reflection or action, and faithfulness to the project of a radical change of society.”² Marxists, Castoriadis tells us, have only interpreted Marx's canon; the point, rather, is to…