
Roman law, the legal system of ancient Rome, has had a profound influence on the development of law in Western civilisation and parts of the East. Roman law covered various aspects of daily life, including crime and punishment, property ownership, commerce, citizenship, and politics. The Romans divided their laws into different categories, such as ius civile (civil law), ius gentium (law of nations), ius naturale (natural law), jus scriptum (written law), and jus non scriptum (unwritten law or custom). The first legal text of Roman law is the Law of the Twelve Tables, which served as the foundation for the elaborate Roman constitution and covered issues of civil, criminal, and military law. Roman law also included specific types of legal documents, such as negotia, which outlined business transactions, and edicts issued by emperors. These laws were established through statutes, magisterial decisions, senatorial decrees, and other means, adapting to the changing circumstances of the Roman world.
| Characteristics | Values |
|---|---|
| Roman law is the legal system of ancient Rome | From the founding of the city in 753 BCE until the fall of the Western Empire in the 5th century CE |
| Roman law covered all facets of daily life | Crime and punishment, land and property ownership, commerce, maritime and agricultural industries, citizenship, sexuality and prostitution, slavery and manumission, politics, liability and damage to property, and preservation of the peace |
| Roman law was established through a variety of means | Statutes, magisterial decisions, emperor's edicts, senatorial decrees, assembly votes, plebiscites, and deliberations of expert legal counsel |
| Roman law was cumulative in nature | A new law could be added to the legal corpus or supersede a previous law |
| Sources of Roman law | Statutes (leges), plebiscites, senatorial decrees (decreta), decided cases (res iudicatae), custom, edicts (senatusconsulta) from the Emperor, magistrates or other higher officials such as praetors and aediles |
| Roman law was based on the concept that all citizens are protected by written laws that cover all crimes and aspects of daily life | The body of written laws constantly grew with new decisions by courts, statutes, plebiscites, senatorial decrees, custom, and edicts from the Emperor, magistrates or other higher officials |
| Roman law created an expectation among the people that their rights would be protected | There was a system whereby wrongs could be redressed |
| Roman law penalties were designed as deterrents rather than corrective measures | Fines (multae), prison, castigation, confiscation of property, loss of citizenship, exile, forced labour or the death penalty (poena capitis) |
| Roman law punishments depended on the status of the defendant | Males of higher social status usually received more lenient penalties |
| Roman law was based on customary law (ius, in Latin) | This was handed down through generations and considered an inherited aspect of Roman society |
| Roman law was divided into jus civile (civil law) and jus gentium ("law of nations") | Jus civile applied only to Roman citizens, while jus gentium was based on common principles and reasoning shared by all civilized societies |
| Roman law was further divided into jus scriptum (written law) and jus non scriptum (unwritten law) | "Unwritten law" referred to custom, while "written law" included not only laws derived from legislation but also laws based on any written source |
| Roman law had specific types of legal documents | Negotia documents disclosed business transactions, while inscriptions on public monuments publicized new laws or gave thanks for court victories |
| Roman law had different levels of citizenship | Each level had more or fewer rights than the other |
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What You'll Learn

Roman law's influence on modern legal systems
Roman law, the legal system of ancient Rome, has had a profound and lasting influence on the development of law in Western civilisation and beyond. It has shaped the legal systems of modern nations, including those in continental Europe, Latin America, and former European colonies. English and Anglo-American common law have also been influenced by Roman law, particularly in their use of Latinate legal terminology.
One of the most significant contributions of Roman law to modern legal systems is the development of a sophisticated legal culture and the emergence of a class of professional jurists, known as "prudentes" or "jurisprudentes" (singular: "prudens"). This class of jurists applied scientific methods to the study of law, a field that the Greeks, from whom they drew inspiration, had not treated as a science. The publication of legal formularies by figures such as Gnaeus Flavius around 300 BC made legal knowledge more accessible and contributed to the development of legal science.
Roman law also introduced the concept of a flexible legal system that could adapt to changing needs and circumstances. During the period of the Roman Republic (753–31 BCE), the ""jus civile" (civil law) was developed, based on custom or legislation and exclusively applicable to Roman citizens. However, as the Roman Republic expanded and interacted with other cultures, the need arose for a more flexible legal framework that could accommodate different contexts and parties, both Roman citizens and foreigners. This led to the development of "jus gentium" (law of nations), which became a crucial part of the Roman legal system and was applied by magistrates with flexibility to citizens and foreigners alike.
The Romans divided their law into two main categories: "jus scriptum" (written law) and "jus non scriptum" (unwritten law). "Jus scriptum" referred not only to laws derived from legislation but also to laws based on any written source. On the other hand, "jus non scriptum" encompassed customs and oral traditions. This categorisation laid the groundwork for the modern understanding and interpretation of written and unwritten laws in various legal systems.
The influence of Roman law extended well beyond the fall of the Western Roman Empire in the 5th century CE. It continued to be used in the Eastern Roman or Byzantine Empire until 1453. In Germany, Roman law remained in force as "subsidiary law" until the adoption of a common code for the empire in 1900. The Corpus Juris Civilis, the codifying legislation of Emperor Justinian I, served as the basis for legal practice in Western continental Europe and beyond, although it was interpreted, developed, and adapted by subsequent generations of jurists to fit changing societal needs.
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The development of Roman law over time
Roman law refers to the legal system of ancient Rome, including legal developments spanning over a thousand years of jurisprudence. The evolution of Roman law can be broadly categorised into three phases: the early Roman laws, the development of ius gentium, and the compilation of laws under Emperor Justinian I.
The early Roman laws were characterised by customary laws (ius in Latin) that were handed down through generations and considered integral to early Roman culture. During this period, the Romans acquired Greek legislation from the Greek cities of Magna Graecia, which influenced their legal system. The Twelve Tables, published around 450-449 BC, was the first set of written Roman laws, documenting centuries-old customary laws and forming the foundation of Roman law.
As the Roman Republic expanded into an empire, governing a diverse population, the need arose for a more flexible legal framework. This led to the development of ius gentium, or the "law of nations," which applied to both Romans and foreigners. Ius gentium was introduced by magistrates to support, supplement, and correct the existing ius civile (civil law). During the period between 201 and 27 BC, more flexible laws were enacted to match the changing needs of the time.
The expansion of the Roman Empire brought new challenges, and by the 3rd century CE, citizenship was extended throughout the empire, blurring the distinctions between ius civile and ius gentium. The Romans further divided their law into ius scriptum (written law) and ius non scriptum (unwritten law or custom). The office of praetor was created in 367 BCE to handle legal matters involving citizens, and later, separate praetors were appointed to deal with foreigners.
In the first two and a half centuries CE, known as the classical period of Roman law, the work of renowned jurists like Gaius, Ulpian, and Paulus elevated Roman law to its apex. Their interpretations and scholarly writings laid the foundation for the sophisticated legal system that Rome boasted when the Roman republic transitioned to the monarchical system of the Principate in 27 BC.
Finally, under the reign of Emperor Justinian I (527-565 CE), the Roman Empire was divided into the Western and Eastern (Byzantine) Empires. Justinian formed a commission of jurists to compile all existing Roman laws into one body, known as the Corpus Juris Civilis. This compilation included the Digest (533 CE), the Code (534 CE), and the Institutes (535 CE), which served to convey the historical tradition, culture, and language of Roman law throughout the empire. The Corpus Juris Civilis became the basis for legal practice in Western continental Europe and influenced the legal systems of its former colonies, including Latin America and Ethiopia.
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How Roman law was made and enforced
Roman law refers to the legal system of ancient Rome, encompassing legal developments over a thousand years, from the Twelve Tables (c. 449 BC) to the Corpus Juris Civilis (AD 529). It formed the basis of legal practice in Western continental Europe and influenced Eastern Europe, as well as the legal systems of former European colonies, including Latin America and Ethiopia. The term "Roman law" today encompasses more than just the laws of ancient Rome, as it also refers to the legal institutions that evolved under the Romans and influenced other societies long after the fall of the Roman Empire.
The Romans had a complex system of government and laws, with three branches: the legislative assemblies (representing the people), the senate (representing nobles and patricians), and the consuls (the executive branch). Laws were made through various mechanisms, with the primary method being the Roman Assemblies, where citizens voted on new laws. Other avenues for law-making included the Plebeian Council, decrees by the senate, decisions by elected magistrates, and edicts by the emperor. The Plebeian Council, for instance, enacted the Licinio-Sextian rogations, a series of laws proposed by tribunes Gaius Licinius Stolo and Lucius Sextius Lateranus around 367 BC.
The Romans divided their laws into two main categories: jus scriptum (written law) and jus non scriptum (unwritten law). Jus scriptum included laws derived from legislation, edicts of magistrates, advice of the senate, and responses and thoughts of jurists. Jus non scriptum referred to customs and traditions. Over time, Roman law evolved to include more specialized categories, such as ius civile (citizen law) and ius gentium (law of nations or peoples).
The enforcement of Roman law was the responsibility of an official called the praetor, the second-highest ranking official in the Roman Republic after the consuls. The praetor oversaw the administration of justice and maintained order with the help of a police force called the Vigiles. When more force was required, such as during riots or against gangs, military groups like the Praetorian Guard and urban cohorts were deployed.
The legacy of Roman law is significant, influencing the development of law in Western civilization and parts of the East. Concepts such as checks and balances, separation of powers, vetoes, term limits, and regular elections found in modern democratic governments have roots in Roman law and the Roman Constitution. Additionally, the English legal system and Anglo-American common law were influenced by Roman law, particularly in their legal terminology.
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Roman law's focus on citizen protection
The legal system of ancient Rome, Roman law, covered a wide range of topics, including crime and punishment, land and property ownership, commerce, citizenship, and slavery. Roman laws were established through various means, including statutes, magisterial decisions, emperor's edicts, and senatorial decrees, and they were enforced by an official called the praetor, who was responsible for administering justice.
One of the key aspects of Roman law was the protection of citizens' rights. The concept of Roman law held that all citizens were protected by written laws that covered all crimes and aspects of daily life. This body of written laws was constantly growing and evolving to reflect changes in society, with new laws added or superseding previous ones. The laws were made by a variety of individuals and groups, including the Roman Assemblies, the Plebeian Council, decrees by the senate, and decisions by magistrates and other high officials.
The Romans divided their law into two main categories: jus scriptum (written law) and jus non scriptum (unwritten law). Written law included not only laws derived from legislation but also any laws based on written sources. Unwritten law referred to customs and traditions passed down through generations, which only applied to Roman citizens and was known as ius civile or civil law. As Rome's empire expanded, the distinction between ius civile and ius gentium (the law of nations) became less clear, and ius gentium evolved to refer to the universal application of certain legal principles, regardless of citizenship.
The penalties for crimes in Roman law served as deterrents and varied depending on the status of the defendant, with males of higher social status often receiving more lenient punishments. Punishments could include fines, imprisonment, castigation, confiscation of property, loss of citizenship, exile, forced labour, or even the death penalty. The Romans also had a system in place for redressing wrongs and ensuring that citizens' rights were protected.
The influence of Roman law extended far beyond the Roman Empire, shaping the legal systems of Western Europe, Latin America, and parts of Eastern Europe. The Corpus Juris Civilis, compiled under Emperor Justinian, became the basis for legal practice in Western continental Europe and its former colonies. The legacy of Roman law includes the creation of precisely worded laws, the concept of checks and balances, vetoes, separation of powers, and regular elections, which form the foundation of modern democratic governments.
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Roman law's impact on Roman society
Roman law, the legal system of ancient Rome, has had a profound and lasting impact on the development of law in Western civilisation and beyond. It has influenced legal systems in Europe, Latin America, Ethiopia, and former European colonies, shaping legal practices even today. The evolution of Roman law was influenced by power shifts and societal changes, as well as the intellectual rigour of Roman legal scholars and their dedication to legal science.
One of the earliest and most significant milestones in Roman law was the Twelve Tables, published around 450–449 BC. These tables were the first set of Roman laws and served as the foundation for the elaborate Roman constitution. They covered issues of civil, criminal, and military law, and every Roman child was expected to memorise them. Unfortunately, the original text has not survived, likely destroyed when Rome was conquered and burned by the Gauls in 387 BC.
During the early Republic, several consequential laws were passed, including the Lex Canuleia (445 BC), which allowed marriage between patricians and plebeians; the Leges Liciniae Sextiae (367 BC), which restricted public land occupation and mandated that one annual consul be a plebeian; the Lex Ogulnia (300 BC), which allowed plebeians to hold certain priestly offices; and the Lex Hortensia (287 BC), which gave binding power to the determinations of plebeian assemblies.
Roman law was characterised by its flexibility and ability to adapt to societal changes and diverse populations. For example, the jus gentium ("law of nations") was developed to be applied to both Romans and foreigners, providing a flexible alternative to the jus civile ("civil law"), which applied exclusively to citizens. This flexibility allowed the legal system to evolve and incorporate various legal matters, such as property rights and family law.
The emergence of a class of professional jurists, or prudentes, also contributed to the sophistication of Roman law. The publication of legal formularies by Gnaeus Flavius around 300 BC made legal knowledge more accessible, allowing non-priests to study and interpret the laws. This led to an increase in the number of legal treatises and contributed to the development of a refined legal culture in Rome.
In conclusion, Roman law had a significant impact on Roman society by providing a flexible and evolving legal framework that adapted to societal changes and the needs of a growing empire. It shaped legal practices and principles that would influence legal systems worldwide, leaving a lasting legacy that continues to be studied and built upon today.
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