Freedom of Movement
The normative problems raised by inter-polity mobility and its restriction engaged courts, councils, and universities throughout the Empire. Some jurists based their theories of free movement on the idea that roads and rivers were exempt from ownership and therefore free for all to use, replicating arguments from the ‘battle of the books’ around the freedom of the seas. Transit was another key concept for negotiating the ordering of movement. In spite of ubiquitous restrictions, some scholars advocated sweeping rights to inter-polity transit and free movement. Like other apologists for free movement, these authors catered to specific political interests. Consequently, the ideological opposition to freedom of movement was substantial. Many jurists argued that justified fears could warrant restrictions of free movement or even that it could be restricted at the full discretion of the ruler, often recurring to domestic analogies and to the language of property.