implemented by Diocletian (reigned 284-305) assessed taxes based both on land and on the inhabitants of that land, it became administratively inconvenient for peasants to leave the land where the census counted them. Starting in 332 AD, Emperor Constantine issued legislation that greatly restricted the rights of the coloni and tied them to the land. Coloni and lower-ranking plebeians were no longer allowed to change their occupation. Ultimately, with the Fall of Rome, non-Patrician Roman citizens themselves would find themselves displaced and would become serfs. Stylistic changes Diocletian and his augusti colleagues and successors openly displayed the naked face of Imperial power. They ceased using the more modest title of princeps; they adopted the veneration of the potentates of ancient Egypt and Persia; and, they started wearing jeweled robes and shoes in contrast to the simple toga praetexta used by Emperors of the Principate. Emperors inhabited luxurious palaces (the ruins of Diocletian's enormous palace in Dalmatia survive to this day; see Diocletian's Palace) and were surrounded by a court of individuals who, only due to the favor and proximity of the Emperor, attained the highest honorific titles and bureaucratic functions. In fact, many offices associated with the palatine life and that suggested intimate relationship with royalty eventually developed connotations of power, such as the offices of Chamberlain and Constable. The titles of Senator and Consul, after the loss of every residue of political power they had had in the Principate, became mere honorifics in the later Empire. Historian David Potter describes the transformation of government under Diocletian when describing the shifts in imagery the Emperor used to display his power (in this case the building of a huge new palace at Sirmium): The style of Government so memorably described by Marcus, whereby the emperor sought to show himself as a model of correct aristocratic deportment, had given way to a style in which the emperor was seen to be distinct from all other mortals. His house could no longer be a grander version of houses that other people might live in: it, like him, had to be different. The adoption of Dominus as a formal title reflected the divine status (divus) that has come to be a prerogative of the Imperial position. Originally an exceptional honour awarded by the Senate to an Emperor posthumously, the elevation had devolved to an expected convention for still-living Caesars. To dissuade the rebellions and