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Giles of Rome

Giles of Rome 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 Giles of Rome rather than just read about it. In short: Giles of Rome (Latin: Aegidius Romanus; Italian: Egidio Colonna; c. 1243 – 22 December 1316) was an Italian medieval philosopher and Scholastic theologian and a friar of the Order of St Augustine, who was also appointed to the positions of prior general of his order and as Archbishop of Bourges. He is famed as being a logician, who produced a commentary on the Organon by Aristotle, and as the author of two important…

Giles of Rome — main illustration
Giles of Rome — illustration

Key takeaways

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

Reference excerpt

Giles of Rome (Latin: Aegidius Romanus; Italian: Egidio Colonna; c. 1243 – 22 December 1316) was an Italian medieval philosopher and Scholastic theologian and a friar of the Order of St Augustine, who was also appointed to the positions of prior general of his order and as Archbishop of Bourges. He is famed as being a logician, who produced a commentary on the Organon by Aristotle, and as the author of two important works: De ecclesiastica potestate, a major text of early-14th-century papalism, and De regimine principum, a guide book for Christian temporal leadership. Giles was styled Doctor Fundatissimus ("Best-Grounded Teacher") by Pope Benedict XIV. Writers in 14th- and 15th-century-England such as John Trevisa and Thomas Hoccleve translated or adapted him into English.

Early life Very little is known about his early life, although the Augustinian friar Jordan of Quedlinburg claimed in his Liber Vitasfratrum that Giles belonged to the noble Colonna family of Rome. But Jordan was not a contemporary of Giles, and many scholars remain sceptical of his account of Giles' early life. Having entered the Order of the Hermits of St. Augustine in Rome, he was sent by his Order to the University of Paris for his philosophical and theological studies, and there became a disciple of the Dominican Thomas Aquinas, and was later appointed to teach at the university, being the first of his Order to do so. It has been estimated that Giles was taught by Thomas Aquinas between 1269 and 1272, and in the years that followed, he produced many of his commentaries on the works of Aristotle, who had been experiencing an intellectual revival during the thirteenth century, and he also produced his commentary on Peter Lombard's Sentences. Giles remained in Paris studying and teaching theology until Bishop Étienne Tempier condemned the application of Aristotelianism within the Christian discourse, including those who had produced commentaries on Aristotle's work. Giles, whose work had been condemned, disappeared from the Parisian academic scene. There is no information remaining concerning Giles between the period of 1277 and 1281, when he returned to Italy. However, in 1281, at the Thirty-sixth Council of Paris, in which several differences between the bishops and mendicant orders were dealt with, he sided with the bishops against the mendicants. In reference to this, a contemporary philosopher, Godfrey of Fontaines mentioned Giles as the most renowned theologian of the whole city (qui modo melior de tota villa in omnibus reputatur), suggesting that he might have been in Paris during this period before going back to Rome. Philip III of France entrusted to Giles the education of his son and heir, who later, in 1285, ascended the throne as Philip IV. When the new king entered Paris after his consecration at Reims, Giles gave the welcoming address in the name of the university, insisting on justice as the most important virtue for a king to practice. In 1285 Giles' work was again called into question, but by 1287 he was allowed to continue teaching. Eight years later in 1295, Giles was appointed as the Archbishop of Bourges, which he wrote about in his work De renunciatione.

Later life Giles was involved in the condemnation of 1277 promulgated by Étienne Tempier. Several of his opinions had been found reprehensible by Archbishop Tempier, and in 1285 Pope Honorius IV asked him for a public retraction. This, however, was far from lessening his reputation, for in 1287 a decree of the general chapter of the Augustinians held in Florence, after remarking that Giles's doctrine "shines throughout the whole world" (venerabilis magistri nostri Ægidii doctrina mundum universum illustrat), commanded all members of the order to accept and defend all his opinions, written or to be written. After filling several important positions in his order he was elected superior-general/prior-general, in 1292. Three years later Pope Boniface VIII appointed him Archbishop of Bourges, France, although Jean de Savigny had already been designated for this see by Pope Celestine V. The French nobility protested on the grounds that Giles was an Italian, but his appointment was maintained and approved by the king. He was present at the Council of Vienne (1311–1312) in which the Order of Knights Templars was suppressed. He died in Avignon.

Works

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Illustrations

Giles of Rome illustration
Giles of Rome: Giles of Rome presenting De Regimine Principum to Philip the Fair, from a contemporary manuscript
Giles of Rome presenting De Regimine Principum to Philip the Fair, from a contemporary manuscript
Giles of Rome: In secundum librum sententiarum quaestiones, 1581
In secundum librum sententiarum quaestiones, 1581

Worked examples

Example 1 — a first encounter with Giles of Rome

Start with the simplest possible case. Write down what Giles of Rome 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 Giles of Rome 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 Giles of Rome 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 Giles of Rome

In research
Giles of Rome 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 Giles of Rome 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
Giles of Rome is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1243 births, 1316 deaths, 13th-century Italian Roman Catholic priests, so understanding it makes those chapters shorter.
In everyday life
Look for Giles of Rome 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 Giles of Rome in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Giles of Rome 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 Giles of Rome out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Giles of Rome in simple terms?

Giles of Rome (Latin: Aegidius Romanus; Italian: Egidio Colonna; c. 1243 – 22 December 1316) was an Italian medieval philosopher and Scholastic theologian and a friar of the Order of St Augustine, who was also appointed to the positions of prior general of his order and as Archbishop of Bourges. He…

Why does Giles of Rome 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 Giles of Rome?

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 Giles of Rome.

Tags

  • 1243 births
  • 1316 deaths
  • 13th-century Italian Roman Catholic priests
  • 13th-century Italian philosophers
  • 14th-century Italian Roman Catholic priests
  • 14th-century Italian philosophers
  • Archbishops of Bourges
  • Augustinian friars
  • Augustinian philosophers
  • Catholic philosophers
  • Christian ethicists
  • Clergy from Rome

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