Discussions of the constitution of the Principate are usually focused on the powers of the emperor, and relatively little attention is given to the role of the senate; by exception much has been written on its jurisdiction, with which I shall not be concerned. Despite his theory of a dyarchy of emperor and senate, which I do not wish to revive, Mommsen, partly because he devoted separate volumes to each, did I not exhibit the extent to which Augustus and Tiberius (...) at least worked through the senate, and on occasions attributed to them legal powers to act by their own authority, when in reality they caused the senate to take action as the only proper means of effecting their wishes. More recently, F. de Martino in his admirable account of the Principate dedicates only one out of twenty-seven chapters to the composition, functions and procedure of the senate. For Syme it was simply an ‘organ that advertised or confirmed the decisions of the government’. This description does not bring out the truth that it was performing a role essential to Augustus' design. For though in effect he founded a monarchy, he commonly thought it expedient on necessary obtain for his measures senatorial approval. That this was the practice of Tiberius in his early years is clearly attested, and some suppose that he behaved in an entirely different manner from Augustus. This view seems to be mistaken, and the mistake is of some consequence. (shrink)