Marshall Hodgson has been rightly admired for his vast contributions in the fields of both Islam and world history. Despite the many decades since the publication of his works on these topics, his ideas have largely survived the test of time and continue to be influential. There are two respects, however, in which Hodgson's ideas appear to have been fundamentally flawed—namely, his notion of cultural cores versus peripheries in the Islamic world, and his understanding of modernity. This article explores both of these themes.