During the Lent of 1250 or 1253, the city patrol came in collision with a party of students, killed one of them, wounded three others, and carried them off to prison. The secular professors of the University refused to lecture, until the beadles were punished, but the Dominican and Franciscan teachers went on with their lectures. When redress had been granted to the University for the outrage, that body drew up an oath to observe all the laws of the University, which it was intended should be taken by all persons before taking the degree as master. The regulars refused to take it; then the University issued a decree, declaring the friars excluded from its body, and deprived of their chairs. The latter appealed to Rome. The pope commissioned the bishop of Evreux, and Luke, canon of Paris, to re-establish the friars in their chairs, which was done. This pope dying, his successor issued a bull, binding all to stop teaching in case of insult, but re-establishing the friars. The king, returning home, stopped the execution of the papal briefs. The pope issued another bull more stringent than the first. Since 1256, S. Thomas had been lecturing as licentiate. At the same time he was enjoying the friendship of S. Bonaventura, who was lecturing under the Franciscan professor. Both men exhibited, in a striking manner, the fundamental quality of the order to which they respectively belonged. Bonaventura loved to look into the placid, earnest soul of Thomas, as into a deep sea, with its marvellous transparency, and awful stillness; whilst Thomas was roused and brightened by the ardent gushing nature of his friend. S. Thomas was angelical; S. Bonaventura was seraphic--the one, the deep thinker; the other, the tender poet. Thomas was famous in the schools for the keenness of his thought, and for his depth and clearness; Bonaventura for his eloquence and vivacity in exposition; the former was a child of contemplation, the latter of activity. Once S. Thomas asked S. Bonaventura to show him the books out of which he got his sublime thoughts. "There is the book," replied S. Bonaventura, pointing to the crucifix. During this time S. Thomas wrote his "Exposition on the Apostles' Creed, the Lord's Prayer, the Angelic Salutation, the Ten Commandments, and the Law of Love." Another work on the "Articles of the Faith and the Sacraments" falls within this period, as well as a commentary on Isaiah.