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Roman law

Roman law is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Roman law rather than just read about it. In short: Roman law is the legal system of ancient Rome, including the legal developments spanning over a thousand years of jurisprudence, from the Twelve Tables (c. 449 BC), to the Corpus Juris Civilis (AD 529) ordered by Eastern Roman emperor Justinian I. Roman law also denoted the legal system applied in most of Western Europe until the end of the 18th century.

Roman law — main illustration
Roman law — illustration

Key takeaways

  • Roman law belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Roman law to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Roman law from memory before moving on to harder problems.

Reference excerpt

Roman law is the legal system of ancient Rome, including the legal developments spanning over a thousand years of jurisprudence, from the Twelve Tables (c. 449 BC), to the Corpus Juris Civilis (AD 529) ordered by Eastern Roman emperor Justinian I. Roman law also denoted the legal system applied in most of Western Europe until the end of the 18th century. In Germany, Roman law practice remained in place longer under the Holy Roman Empire (963–1806). Roman law thus served as a basis for legal practice throughout Western continental Europe, as well as in most former colonies of these European nations, including Latin America, and also in Ethiopia. English and Anglo-American common law were influenced also by Roman law, notably in their Latinate legal glossary. Eastern Europe was also influenced by the jurisprudence of the Corpus Juris Civilis, especially in countries such as medieval Romania, which created a new legal system comprising a mixture of Roman and local law. After the dissolution of the Western Roman Empire, the Roman law remained in effect in the Byzantine Empire. From the 7th century onward, the legal language in the East was Greek, with Eastern European law continuing to be influenced by Byzantine law.

Development The jurist Sextus Pomponius said, "At the beginning of our city, the people began their first activities without any fixed law, and without any fixed rights: all things were ruled despotically, by kings". Before the Twelve Tables (i.e between 754 and 449 BC), private law comprised the Roman civil law (ius civile Quiritium) that applied only to Roman citizens and was bonded to religion. The ius civile of the time was undeveloped, with attributes of strict formalism, symbolism, and conservatism, for example, as embodied in the ritual practice of mancipatio. It is believed that Roman law is rooted in the Etruscan religion, emphasizing ritual.

Twelve Tables

The first legal text of the Roman law is the Law of the Twelve Tables, dating from the mid-fifth century BC. The plebeian tribune, C. Terentilius Arsa, proposed that the law should be written in order to prevent magistrates from applying the law arbitrarily. After eight years of political struggle, the plebeian social class convinced the patricians to send a delegation to Athens to copy the Laws of Solon; they also dispatched delegations to other Greek cities for a like reason. In 451 BC, according to the traditional story, according to Livy, ten Roman citizens were chosen to record the laws, known as the decemviri legibus scribundis. While they were performing this task, they were given supreme political power (imperium), whereas the power of the magistrates was restricted. In 450 BC, the decemviri produced a set of laws inscribed on ten tablets (tabulae), which were considered unsatisfactory by the plebeians. A second decemvirate is said to have added two additional tablets in 449 BC. The resulting Law of the Twelve Tables was subsequently approved by the people's assembly. Modern scholars tend to challenge the accuracy of Roman historians. They generally do not believe that a second decemvirate ever took place. The decemvirate of 451 BC is believed to have assumed the leading functions in Rome and included the most controversial points of customary law. Questions concerning Greek influence on early Roman law are still much discussed. Many scholars consider it unlikely that the patricians sent an official delegation to Greece, as the Roman historians believed. Rather, the Romans acquired Greek legislations from the Greek cities of Magna Graecia, the main portal between the Roman and Greek worlds. The original text of the Twelve Tables has not been preserved. The tablets were probably destroyed when Rome was conquered and burned by the Gauls in 387 BC. The fragments which did survive show that it was not a law code in the modern sense. It did not provide a complete and coherent system of all applicable rules or give legal solutions for all possible cases. Rather, the tables contained specific provisions designed to change the then-existing customary law. Although the provisions pertain to all areas of law, the largest part is dedicated to private law and civil procedure.

Early republican law

Among the most consequential laws passed during the early Republic were the Lex Canuleia (445 BC), which allowed marriage (conubium) between patricians and plebeians; the Leges Liciinae Sextiae (367 BC), which restricted the amount of public land (ager publicus) that any citizen could occupy, and stipulated that one of the two annual consuls must be plebeian; the Lex Ogulnia (300 BC), which permitted plebeians to hold certain priestly offices as pontiffs or augurs; and the Lex Hortensia (287 BC), which stated that the determinations of plebeian assemblies (plebiscita) would henceforth be binding on the entire populus Romanus, both patricians and plebeians. Another important statute from the Republican era is the Lex Aquilia of 286 BC, which may be regarded as the root of modern tort law.

Jurisprudence Rome's most important contribution to European legal culture was not the enactment of well-drafted statutes, but the emergence of a class of professional jurists (prudentes or jurisprudentes, sing. prudens) and of a legal science. This was achieved in a gradual process of applying the scientific methods of Greek philosophy to the subject of law, a subject which the Greeks themselves never treated as a science. Traditionally, the origins of Roman legal science are connected to Gnaeus Flavius. Around the year 300 BC, Flavius is said to have published the formularies containing the words which had to be spoken in court to begin a legal action. Before the time of Flavius, these formularies are said to have been secret and known only to the priests. Their publication made it possible for non-priests to explore the meaning of these legal texts. Whether or not this story is credible, jurists were active, and legal treatises were written in larger numbers before the 2nd century BC. Among the famous jurists of the republican period are Quintus Mucius Scaevola, who wrote an influential and voluminous treatise on all aspects of the law, and Servius Sulpicius Rufus, a friend of Marcus Tullius Cicero. Thus, Rome had developed a very sophisticated legal system and a refined legal culture when the Roman republic was replaced by the monarchical system of the Principate in 27 BC.

… excerpt ends here. Continue reading the full article.

Illustrations

Roman law illustration
Roman law: Title page of a late 16th-century edition of the Digesta, part of Emperor Justinian's Corpus Juris Civilis
Title page of a late 16th-century edition of the Digesta, part of Emperor Justinian's Corpus Juris Civilis
Roman law: Cicero, author of the classic book The Laws, attacks Catiline for attempting a coup in the Roman Senate.
Cicero, author of the classic book The Laws, attacks Catiline for attempting a coup in the Roman Senate.
Roman law: Legal systems of the world. Blue is based on Roman law.
Legal systems of the world. Blue is based on Roman law.

Worked examples

Example 1 — a first encounter with Roman law

Start with the simplest possible case. Write down what Roman law claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Roman law before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Roman law ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Roman law

In research
Roman law appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Roman law in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Roman law is common in secondary-school and first-year university syllabi. It links to neighbouring topics Italian inventions, Roman law, so understanding it makes those chapters shorter.
In everyday life
Look for Roman law outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Roman law in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Roman law means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Roman law out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Roman law in simple terms?

Roman law is the legal system of ancient Rome, including the legal developments spanning over a thousand years of jurisprudence, from the Twelve Tables (c. 449 BC), to the Corpus Juris Civilis (AD 529) ordered by Eastern Roman emperor Justinian I. Roman law also denoted the legal system applied in…

Why does Roman law matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Roman law?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Roman law.

Tags

  • Italian inventions
  • Roman law

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