magistrātus

Magistrate comes from Latin magistrātus, meaning both the office of magistrate and the person holding it — a double usage that reflects the Roman understanding that the officer and the office were inseparable. The word derives from magister ('master, director, chief'), which is itself from the root magnus ('great') plus the suffix -ter (a comparative agent suffix). A magister was a 'greater one' — a person in authority over others. From magister came magistrātus: the institutionalized form of mastery, the person whose greatness was not personal but official, whose authority derived not from his own qualities but from his office. Roman magistrates — consuls, praetors, censors, aediles, quaestors — were the gears of republican governance, each with defined powers, defined terms, and defined colleagues who could check their authority.

The Roman magistrate's authority was expressed through the concept of imperium — the power of command — and potestas — the power of administration. Not all magistrates held imperium (which gave the right to command armies and execute citizens), but all held potestas (which gave administrative and judicial powers within their sphere). The magistrature was not a bureaucracy in the modern sense but a rotation of civic leadership: Rome's leading citizens took turns holding offices, each office training them in governance and testing their capacity for authority. The system was designed to prevent any single man from accumulating permanent power — the one-year term and the requirement of colleagues at the same rank meant that power circulated rather than concentrated.

The word passed through Old French magistrat and into English as magistrate in the sixteenth century, but its meaning had already narrowed significantly. While the Roman magistrātus could refer to any of a dozen types of officer — from consul to quaestor — the English 'magistrate' settled primarily on the judicial function: a lower-level judge with authority to hear minor criminal and civil cases, issue warrants, and conduct preliminary hearings. The Justice of the Peace, established in England by statute in 1361, was the proto-magistrate of the English common law tradition: a local officer with judicial powers, drawn from the landowning gentry, serving without pay. The great variety of Roman magistracies compressed into a single English office at the bottom of the judicial hierarchy.

Modern magistrates occupy different positions in different legal systems. In the United States, a federal magistrate judge handles pretrial proceedings and issues warrants. In England and Wales, lay magistrates (unpaid justices of the peace) handle the vast majority of criminal cases — over ninety percent of all criminal proceedings pass through magistrates' courts. In France, the juge d'instruction is a magistrate with investigative powers that would astonish his Roman counterpart. In all these systems, the magistrate is the point of first contact between the citizen and the formal apparatus of law — the officer who embodies, at the lowest level, the state's authority to compel and to judge. The Roman magister, the great one, has become, in democratic systems, the nearest and most accessible form of official authority.