Having secured their prize, the Dominicans showed that they knew how to use it. The order was, on one side of it, a great educational institution to select and train young men to fight the intellectual battles of the Church. The young Dominican at once put on the yoke of the “course of study” (_Ordo Studiorum_), which had been prescribed by the General Chapter, and proceeded as far toward the highest dignities and responsibilities of learning as his abilities were thought to warrant. The decision on this point rested with the General of the Order, who at this time was John of Germany, the fourth in the succession begun by Dominic. He selected for Thomas as his best teacher, Albert of Bollstadt, better known as Albert the Great (Magnus), who was teaching in the monastic school at Koeln (Cologne), and who had the reputation of having absorbed all that Aristotle knew, and worked up his teaching into a harmony of Christian theology with Greek philosophy. According to his biographers generally, Thomas was sent at once to Koeln in 1245, and accompanied Albert when he proceeded to Paris in that same year to take his degree as Doctor of Theology, returning with him in 1248. Dr. Heinrich Denifle, however, assigns 1248 as the year when Thomas came to Koeln from Italy, and limits their intercourse as master and scholar to the two years required by the rules of the order. Whether their relations as such extended over five years or were limited to two, they were enough for the formation of a life-long friendship based on mutual respect and admiration. Strangely enough the young Italian from the garrulous South was noted more for silence than for speech among the students at Koeln. He had found a teacher whom he thought worth hearing in silence, and he heard to better purpose than his associates. _Bos mutus_, a dumb ox, they called him. Albert foretold that “the sound of his bellowing in doctrine would yet go through the whole world.”
In 1250, the year when Frederic II. died, Thomas proceeded to Paris by direction of the General of the Order. In that mother university of Christendom the Dominicans were allowed by their rule to receive the doctorate—in that and no other. For one year the candidate must hear and dispute in the Dominican school on St. Jacques Street; for another he must teach, but without ascending the cathedra, from which authoritative decisions were expected. But in Thomas’s case these two years of his Parisian apprenticeship were prolonged to seven. The university quarrelled with the representatives of the Mendicant orders just as Thomas was about to take his degree, and in the five years’ struggle which ensued all ordinary relations and procedures were suspended. For some time, indeed, the university itself was dissolved, to evade the bull of excommunication which the Pope aimed at it in the interest of the Mendicants.