Meanwhile in 1583 appeared _Los nombres de Cristo_ and _La perfecta casada_. The theologian, philosopher, and poet was also a man of affairs. That he was so esteemed by his colleagues is proved by the fact that he was nominated by them to take in hand, and settle, a long-standing suit between the University of Salamanca and the _Colegios Mayores_ which had secured from Rome two concessions that were held to be injurious to the interests of the University. This suit, begun in 1549, was taken charge of by Luis de Leon in January 1585; in February Dr. Antonio de Solís, a learned lawyer, was dispatched to Madrid to give advice on legal points; Solís fell ill and was replaced by Doctor Diego de Sahagun. The business involved an interview with Philip II and, as the king was absent from the capital, Luis de Leon wrote to the University authorities explaining the situation, and suggesting that, in the interests of economy, the mission should be recalled. The University evidently acted upon this suggestion, for on August 1 Luis de Leon was back in Salamanca.[238] He was re-appointed to take up the same work again on November 22, 1586, and on January 17, 1588, he was able to report that the everlasting lawsuit was at an end, and that the contention of the University of Salamanca had been accepted.[239] The _Claustro_ was so overjoyed that it authorized the fulfilment of its promise to pay Luis de Leon his salary and expenses. This elation and fit of generosity proved to be premature. On March 5, 1588, Luis de Leon was obliged to ask for the return of the original _cédula_ and to state that no use could meanwhile be made of it.[240] The disappointment at Salamanca was great, and the _Claustro_ showed its irritation by ordering the return of Luis de Leon and by voting that the payment of his salary be suspended after October 18, if he had not returned by that date. Owing to Luis de Leon's illness a prolongation of his absence was agreed to, later on; but this concession implied no change of mind on the part of the _Claustro_. A certain University Professor, Dr. Bernal, who had acted for several years as _Regidor_ of Salamanca, and had been from the first hostile to Luis de Leon in this matter, moved that the absentee be ordered back to Salamanca at once with a view to avoiding the unnecessary expense of paying the salary of a substitute to deliver lectures. This was carried by an overwhelming majority on January 20, 1589,[241] and three days later it was resolved that Luis de Leon be instructed to return to his chair within a month. As Luis de Leon was plunged in important business which could not be broken off lightly, Philip II caused a letter to be written on March 7 in which he requested the _Claustro_ to authorize Luis de Leon's absence from his chair till the end of August.[242] The royal request was refused and, as if to mark a want of confidence in Luis de Leon, another member was nominated to conduct the negotiations at Madrid. Luis de Leon's mission was really ended, for his delegated powers had expired; nevertheless, he acted as though they were still in force and with such effect that on August 23 he appeared before the _Claustro_ with the royal warrant.[243] He was warmly complimented on his success, but the _Claustro_ was less profuse of deeds than of words. On August 26 Luis de Leon made three requests:[244] (_a_) that his arrears of salary be paid for the time that he had represented the University in Madrid; (_b_) that some compensation be paid to his monastery for the time he had been engaged on University business after his mandate had expired; and (_c_) that he be given two years' leave of absence from his chair. As to the first point, Doctor Diego Henriquez was commissioned to examine vouchers and pay the petitioner what was due; as to the second point, the decision was referred to a group of professors who held their chairs by a life-tenure; it was agreed to grant the third request, if the King's approval was secured. This sounds like satisfactory treatment. In practice the concessions were not made. On December 20, 1589, the arrears of salary still remained unpaid; on October 20, 1589, it appeared that the _Claustro_ had no power to grant leave of absence.[245] It had apparently the power to fine Luis de Leon for not lecturing, and it did so with such insistency that the Prior of the Augustinian monastery in Salamanca felt compelled to lodge a protest against this action, which, it was contended, was unconstitutional.