Cicero’s style is a key to the success of De officiis, and not just the literary style, but the political and intellectual style. Regulus aside, the … - Alan Ryan

Justice stands in an awkward relationship with utility. The general practice of justice conduces to human welfare, probably more than anything else. The old tag sums up justice as 'honeste vivere, neminem laedere, suum cuique tribuere' … Yet, justice seems also to conflict with utility and even with the general welfare, let alone the welfare of particular people.

Together with the histories of Polybius and Livy, Cicero’s polemical speeches and writings, and his personal correspondence, form some of the most important historical resources for understanding the Roman legal and political system. Here we focus only on his political theory narrowly construed, part of his program to adapt Greek philosophy to Roman social and political purposes, bypassing even the extended defense of the role of oratory in political life that became something like a handbook for the study of rhetoric.

Justice is closely connected to respect for rights. Modern writers discuss both subjects together with no suggestion that one might discuss one with the other. It was not always so. Greek political theory and Roman Law had sophisticated ideas about justice in its various aspects, but did not embrace our conception of individual rights. This may seem counter-intuitive. How could a society recognize someone as the owner of a piece of property without acknowledging an individual right? How does legitimate one-man­ rule, monarchy, differ from its illegitimate parody, tyranny, unless the lawful king has a right to the authority he exercises that the tyrant does not?
The answer is that property and authority were defined by law rather than our notion of individual rights. To own property was to be the person to whom the law accorded the privileges and immunities that locally defined ownership. To be a legitimate ruler was to be the person the law designated to rule. It is a commonplace that ancient notions of law accorded far more power over property to the family and other groups than modern notions of private property do. Even under the Roman Law, where ownership had an 'absolute' and sovereign character, property was not understood in the modern way; when the law told the judge to give a man his ius, this primarily meant that he should be treated as the law required. The 'subjective' understanding of rights, whereby the right-holder may stand on his rights or not as he chooses, was not a Roman notion.