Tacitean studies, centred on the work of Tacitus the Ancient Roman historian, constitute an area of scholarship extending beyond the field of history. The work has traditionally been read for its moral instruction, its narrative, and its inimitable prose style; Tacitus has been most influential as a political theorist, outside the field of history. The political lessons taken from his work fall roughly into two camps : the "red Tacitists", who used him to support republican ideals, and the "black Tacitists", those who read his accounts as a lesson in Machiavellian Realpolitik.