# Thomas Aquinas

> Italian Dominican friar, philosopher, Catholic priest, and Doctor of the Church (1225–1274)

**Wikidata**: [Q9438](https://www.wikidata.org/wiki/Q9438)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Thomas_Aquinas)  
**Source**: https://4ort.xyz/entity/thomas-aquinas

## Summary
Thomas Aquinas was an Italian Dominican friar, Catholic priest, philosopher, and theologian who lived from 1225 to 1274. He is renowned as a Doctor of the Church and for authoring seminal theological works such as the *Summa Theologica* and *Summa contra Gentiles*, which synthesized Aristotelian philosophy with Christian doctrine. His development of the *Quinque viae* (Five Ways) provided logical arguments for the existence of God that remain influential in philosophy and theology.

## Biography
- **Born:** January 25, 1225 (alternatively recorded as February 1, 1225, or January 1, 1225)
- **Nationality:** Italian (citizen of the Kingdom of Sicily/Italy)
- **Education:** Studied at the University of Naples Federico II and the University of Paris
- **Known for:** Synthesizing Aristotelian philosophy with Christian theology, authoring the *Summa Theologica*, and formulating the *Quinque viae*
- **Employer(s):** Dominican Order (as a friar), University of Paris, University of Naples Federico II
- **Field(s):** Theology, Philosophy, Catholic Priesthood

## Contributions
Thomas Aquinas produced a vast body of work that defined medieval scholasticism and continues to influence Catholic thought.
- **Summa Theologica:** A comprehensive theological treatise completed around 1274, serving as a systematic summary of Catholic doctrine and philosophy.
- **Summa contra Gentiles:** A major apologetic work begun around 1200 (per source inception data) intended to defend the Christian faith against non-believers.
- **De regimine principum:** A political treatise addressing the governance of rulers and the nature of political authority.
- **Quinque viae:** Formulated five logical arguments for the existence of God within the *Summa Theologica*: the argument from motion, causation, contingency, degree, and final cause.
- **Lauda Sion:** Composed this sequence prescribed for the Roman Catholic Mass for the feast of Corpus Christi.
- **Thomism:** Founded the philosophical school known as Thomism, which is based on his work and interpretations of Aristotle.

## FAQs
**What are Thomas Aquinas's most significant written works?**
His most important works include the *Summa Theologica*, a massive theological treatise, and the *Summa contra Gentiles*, a defense of the faith. He also wrote *De regimine principum* on political governance and composed the liturgical sequence *Lauda Sion*.

**What is the *Quinque viae* and why is it important?**
The *Quinque viae* are five logical arguments for the existence of God found in his *Summa Theologica*. These arguments rely on observation of the natural world, including motion, causation, and contingency, to demonstrate the necessity of a first cause or God.

**Which universities was Thomas Aquinas associated with?**
He studied at the University of Naples Federico II and later taught at the University of Paris. He is also associated with the Pontifical University of Saint Thomas Aquinas in Rome, which bears his name.

**What titles and honors did Thomas Aquinas receive?**
He is recognized as a Doctor of the Church and holds the honorary titles of "Doctor Angelicus" (Angelic Doctor) and "Doctor Communis" (Common Doctor). He was also canonized as a saint in the Catholic Church.

**How did Thomas Aquinas influence later philosophy and theology?**
His synthesis of Aristotelian logic with Christian faith created the school of thought known as Thomism. His work influenced later figures such as René Descartes, Martin Luther, and John Calvin, and remains a cornerstone of Catholic education and philosophy.

## Why They Matter
Thomas Aquinas fundamentally transformed the landscape of Western thought by bridging the gap between ancient Greek philosophy and medieval Christian theology. Before his work, Aristotelian philosophy was often viewed with suspicion by the Church; Aquinas demonstrated that reason and faith were compatible, creating a robust intellectual framework that dominated European universities for centuries. His systematic approach to theology in the *Summa Theologica* provided a structured method for analyzing doctrine that is still used today. Without his contributions, the development of scholasticism, the specific nature of Catholic dogma, and the trajectory of natural law theory would be unrecognizable. His arguments for the existence of God remain central to philosophical debates on metaphysics and the nature of reality. Furthermore, his influence extends beyond theology into political philosophy and ethics, shaping how concepts of justice, law, and human nature are understood in both religious and secular contexts.

## Notable For
- Being an Italian Dominican friar, Catholic priest, and Doctor of the Church.
- Authoring the *Summa Theologica*, one of the most influential works in Western philosophy and theology.
- Developing the *Quinque viae* (Five Ways) to prove the existence of God.
- Founding the philosophical school of Thomism.
- Composing the liturgical sequence *Lauda Sion* for the feast of Corpus Christi.
- Holding the titles "Doctor Angelicus" and "Doctor Communis."
- Teaching at the University of Paris and the University of Naples Federico II.
- Influencing a vast array of thinkers, including Augustine of Hippo, Aristotle, and later philosophers like Descartes and Kant.
- Being the namesake of numerous institutions, including the Pontifical University of Saint Thomas Aquinas and the University of St. Thomas in Houston.
- Having his works referenced in the film series *The Philosophers*.

## Body

### Identity and Early Life
Thomas Aquinas was a human and a unique member of the species *Homo sapiens*, born in 1225 in Italy. He was an Italian Dominican friar, a member of a mendicant male religious order in the Roman Catholic Church. His primary occupations included being a theologian, philosopher, Catholic priest, and writer. He is also classified as a university teacher. His life spanned from 1225 to 1274, with his death recorded on March 7, 1274, or March 14, 1274. He was a citizen of the region that is now Italy, specifically associated with the Kingdom of Sicily during his lifetime.

### Education and Academic Career
Aquinas received his education at the University of Naples Federico II, which was founded in 1224, and later studied at the University of Paris, a French university established around 1150. He was affiliated with the Dominican Order, which served as his primary religious and academic community. His career as a university teacher saw him instructing students at prestigious institutions, contributing to the intellectual life of the 13th century. He is also linked to the Higher Institute of Religious Sciences "St. Thomas Aquinas" in Kyiv, Ukraine, a modern institution named in his honor.

### Major Works and Theological Contributions
The core of Aquinas's legacy lies in his extensive literary output. The *Summa Theologica*, a theological treatise with an inception date of 1274, stands as his magnum opus. This work is a comprehensive summary of Catholic theology and philosophy. Another major work is the *Summa contra Gentiles*, a text intended to defend Christian doctrine against non-believers, with an inception date noted in the source as 1200. He also authored *De regimine principum*, a work on political governance. In the *Summa Theologica*, he presented the *Quinque viae*, five logical arguments for the existence of God: the argument from motion, the argument from causation, the argument from contingency, the argument from degree, and the argument from final cause. Additionally, he composed *Lauda Sion*, a sequence for the Roman Catholic Mass for the feast of Corpus Christi.

### Philosophical School and Influence
Aquinas is the founder of Thomism, a philosophical school based on his work that integrates Aristotelian logic with Christian theology. This school of thought has had a profound and lasting impact on Catholic doctrine and Western philosophy. He was influenced by a wide range of predecessors, including Aristotle, Plato, Augustine of Hippo, Anselm of Canterbury, and Avicenna. His work, in turn, influenced later thinkers such as René Descartes, Martin Heidegger, G. K. Chesterton, and Ayn Rand. The *Quinque viae* remain a standard topic in philosophy of religion. His influence is also seen in the work of modern philosophers like Jean-Pierre Torrell, a French theologian who has studied Aquinas extensively.

### Legacy and Commemoration
The legacy of Thomas Aquinas is preserved through numerous institutions, locations, and cultural references. The Pontifical University of Saint Thomas Aquinas, located in Rome, Italy, was established in 1577 and later reorganized in 1963. The University of St. Thomas in Houston, Texas, founded in 1947, is a private Catholic university named after him. Other institutions include the University of St. Thomas in Minnesota (founded 1885) and the Higher Institute of Religious Sciences "St. Thomas Aquinas" in Kyiv. Geographic locations named after him include São Tomás de Aquino in Brazil and Saint-Thomas-d'Aquin in Paris. Religious sites dedicated to him include the Monastery of the Jacobins in France and the Church of St. Thomas Aquinas and the Monastery of Dominican in Minsk, Belarus. He is also the subject of numerous biographical entries and has a significant presence in digital archives, with over 200 sitelinks on Wikipedia.

### Titles and Recognition
Aquinas is officially recognized as a Doctor of the Church, a title bestowed upon saints whose writings are of great importance to the Church. He is also known by the honorary titles "Doctor Angelicus" (Angelic Doctor) and "Doctor Communis" (Common Doctor). His contributions to theology and philosophy have been acknowledged through various identifiers and classification codes in library and academic systems, including ISNI, VIAF, and GND. He is listed in the *Philosophers* film series, highlighting his enduring cultural relevance.

### Related Entities and Networks
Aquinas's intellectual network includes key figures such as Boethius, Moshe ben Maimon (Maimonides), Cicero, Al-Kindi, Johannes Scotus Eriugena, Averroes, and Albertus Magnus. He is also connected to later theologians and philosophers like William of Ockham, Gottfried Wilhelm Leibniz, and Rudolf Steiner. His work intersects with various fields, including theology, philosophy, and the study of deities and religious beliefs. The *Summa Theologica* and *Summa contra Gentiles* are frequently cited in discussions of Christian theology, apologetics, and dogmatic theology. His influence extends to the study of natural theology, theodicy, and the philosophy of mind.

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