The students of the Paris University may be divided into three classes: those who lived in seminaries, those who lived in monasteries, and those who lived as best they could. Some were destitute, living on charity, or in hospitia; others were rich and lordly, great spendthrifts and swaggerers, studying out of mere curiosity, or pure conceit.

John of S. Alban had founded a hospitium for pilgrims, with a chapel dedicated to S. James; this he handed over to the Dominicans, which gift the University confirmed on condition that mass was said for its living and dead members twice a year. Thus the Dominicans came in contact with the University. From the first they attended the theological schools of the Church of Paris. S. Louis built them a convent, and at his death left them a part of the library he had collected at the Sainte Chapelle. Novices were taught Latin and logic; and disputations echoed in the cloister. Meditation was made to counterbalance the excitement of study.

The lectures were given in large halls. In the middle stood the chair of the master, with another seat below, and in front of him a stool for the bachelor who was going through his training. If there was not room on the benches, the students sat on the straw which covered the floor. The teaching was principally done by question and answer, by exposition, repetition, and disputation. No book was used, the teacher might have the text before him, and sometimes the students took notes in shorthand, which they wrote out at their leisure.

Nothing has been handed down, of any moment, regarding the studies of S. Thomas at Paris during this period. Albert was at the height of his reputation. His lecture-hall was so crowded, that he was forced to lecture in a square, near Notre Dame, known as the Place Maubert.

The same year in which S. Thomas finished his studies (1248), a general chapter of Dominicans was held at Paris. Here it was ruled that four new schools should be started on the model of that at Paris. Bologna for Lombardy; Montpellier for Provence; Oxford for England; Cologne for Germany. Albert was to take the chair at Cologne, re-arrange the studies, and be regent; whilst Thomas, who was not twenty-three, was to be second professor, and "Magister Studentium." Albert's old reputation attracted crowds. Thomas was not long before he also acquired a brilliant reputation.

His distinctions, even compared with those of Albert, were so new, his arguments so ingenious, that all were dazzled at his great ability. It was at Cologne that he first gave evidence as a teacher, of that depth, balance, and expansion, which, in after life, made him the weightiest of authorities on the most momentous of religious questions. In his treatment of the Scripture and of the Sentences, he had ample opportunity for displaying his many-sided gifts.

Nor did he confine himself to teaching in the schools. He preached and wrote. His first pieces were "De Ente et Essentia," and "De Principiis Naturæ." These two works contain the germ of a future system, and were remarkable productions for a youth of twenty-two.

The saint's practice in teaching, and the accuracy he acquired by writing, from an early age, were of great assistance to him in developing his powers. He possessed, moreover, a gift—most valuable at all times—calmness and self-possession, which was the result, partly of education, greatly of character; partly of breadth of mind, and chiefly of grace. Under the most trying provocation he was never known to lose his self-control.

His humility and sweetness came out strikingly when arguing in the schools. Though his opponent, in the heat of disputation, might forget himself, Thomas never did.

Once, when a young student arrogantly defended a thesis of which he knew the saint did not approve, he was suffered to proceed in silence. But the next day, when he continued his argument with still greater arrogance, the saint with infinite sweetness, but crushing power, put a few questions, made a few distinctions, and upset the student with such ease, first on one point, then on another, that the whole school was in an uproar of admiration. Both the youth and his fellows were taught a lesson which they did not easily forget. Again, while he was preaching at S. James's, an official of the University walked up the church, and beckoned the saint to stop, and then read out an offensive document, drawn up by the secular party, in opposition to the Friars' Preachers. When the congregation had somewhat recovered from their surprise, S. Thomas proceeded with his sermon with undisturbed composure.