The first luminary was Alfred Marshall, the leading economist in Britain (and therefore, some might argue, the world) from the last decade of the nineteenth century until his death in 1924. Marshall’s magnum opus is Principles of Economics, first published in 1890 and revised and expanded seven times afterward. As a comprehensive review of the development of economic thought, it has few equals, and in fact the eighth edition is still used as an important text in many college curricula.