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Thomas Cajetan

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Thomas Cajetan was a highly influential Italian philosopher and theologian.

De Vio, Tommaso – Summula Caietani, 1530 – BEIC 13688745
De Vio, Tommaso – Summula Caietani, 1530 – BEIC 13688745

He lived from February 20, 1469, to August 9, 1534. He was born Jacopo Vio in Gaeta, part of the Kingdom of Naples. He later took the religious name Tommaso de Vio. His surname, Cajetan, came from his birthplace. He was a central figure in the Catholic Church during a time of great religious change. He served as the Master of the Order of Preachers from 1508 to 1518. He also became a cardinal in 1517.

De Vio - Opuscula omnia, 1596 - 4592647 BEIC3 V00110 F0009
De Vio - Opuscula omnia, 1596 - 4592647 BEIC3 V00110 F0009

Cajetan's intellectual life was built on the philosophy of St. Thomas Aquinas. He joined the Dominican order at age fifteen. By the time he was thirty, he was a doctor of theology at Padua. He eventually became a professor of metaphysics. His reputation grew after a public debate in Ferrara in 1494. He rose through the ranks of the Dominicans to become their general in 1508. Cajetan was a scholastic thinker of the older Thomist type. This means he focused on using logic and reason to explain faith. He was known for his deep study of the Bible and classical philosophy.

One of his most important roles involved the authority of the Pope. During the Fifth Lateran Council from 1512 to 1517, he played a leading role. He argued that the Pope held authority superior to that of church councils. He used the analogy of a shepherd and his sheep to explain this. He believed a council could only judge a Pope if the Pope became a heretic. A heretic is someone who holds beliefs that go against official Church teaching. In such a case, the council could undo that person's election. However, he maintained that the council did not rule over the office itself.

De Vio, Tommaso – Summula Caietani, 1530 – BEIC 13688745
De Vio, Tommaso – Summula Caietani, 1530 – BEIC 13688745

Cajetan is also famous for his opposition to the Protestant Reformation. In 1518, he was sent as a legate to the Diet of Augsburg. His task was to examine the teachings of Martin Luther.

Luther-vor-Cajetan
Luther-vor-Cajetan

He was a steadfast opponent of Luther's ideas. In 1519, he helped draft the bill of excommunication against Luther. Excommunication is a process where a person is officially excluded from the Church. Cajetan worked to shape how papal delegates handled the reformers in Germany. He believed in maintaining strict ecclesiastical discipline within the Church.

As a scholar, Cajetan produced massive amounts of written work. He is perhaps best known for his extensive commentary on the *Summa Theologiae*. This was a major work by St. Thomas Aquinas. For five hundred years, students studied the *Summa* alongside Cajetan's notes.

He also wrote a famous treatise called *The Analogy of Names*. This book explored the concept of analogy in philosophy. Analogy is the idea that words can have similar but different meanings. Other thinkers of his time called his work on this subject the most complete resource available. He even made a careful translation of much of the Old and New Testaments.

Cajetan's views were sometimes quite independent and even controversial. He held liberal views on marriage and divorce. He also denied the existence of a material Hell. Some of his ideas were considered heterodox, which means they differed from official doctrine. The Sorbonne in Paris found some of his views objectionable. Because of this, some passages were removed from later editions of his work. Despite this, he was a highly respected diplomat and administrator. He helped elect Pope Adrian VI during the conclave of 1521–1522. He also drafted the decision rejecting Henry VIII's request for an annulment.

De Vio - Opuscula omnia, 1596 - 4592647 BEIC3 V00110 F0009
De Vio - Opuscula omnia, 1596 - 4592647 BEIC3 V00110 F0009

His legacy had a lasting impact on the Catholic Church. Pope Leo XIII later cited Cajetan as a reason for the revival of Thomism. This movement is known as Neo-Scholasticism or Neo-Thomism. It focused on returning to the teachings of Thomas Aquinas. Because of Cajetan's influence, the *Summa* and his commentaries were studied together for centuries. In 1923, Pope Pius XI officially named Aquinas the "Common Doctor" of the Church. This happened partly because of the way thinkers like Cajetan had preserved Aquinas's intellect. Cajetan died in Rome on August 9, 1534, leaving behind a massive intellectual footprint.

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