Caligula incest with his sisters, Agrippina the Younger, Drusilla, and Livilla, and say he prostituted them to other men. They state he sent troops on illogical military exercises, turned the palace into a brothel, and, most famously, planned or promised to make his horse, Incitatus, a consul, and actually appointed him a priest. The validity of these accounts is debatable. In Roman political culture, insanity and sexual perversity were often presented hand-in-hand with poor government. Caligula's actions as emperor were described as being especially harsh to the senate, to the nobility and to the equestrian order. According to Josephus, these actions
Roman emperor his "auctoritas" and pious respect for tradition. Some later historians such as Tacitus would say that even at Augustus' death, the true restoration of the Republic might have been possible. Instead, Augustus actively prepared his adopted son Tiberius to be his successor and pleaded his case to the Senate for inheritance on merit. The Senate disputed the issue but eventually confirmed Tiberius as "princeps". Once in power, Tiberius took considerable pains to observe the forms and day-to-day substance of republican government. Rome had no single constitutional office, title or rank exactly equivalent to the English title "Roman emperor". Romans of