The Spanish cavaliers who had experienced the prowess and courtesy of their Moorish adversaries, as a rule, cherished no bitterness against the Jews. Those who, in the course of events, were absorbed with the territory of the growing kingdom, often elicited admiration and respect by reason of their commanding talents and erudition. The political administration of Castile and Leon, under Alfonso VIII., was committed to a Jew; and his physician, who was of the same race and enjoyed the royal confidence, was chosen by the nobles as an intermediary between themselves and their sovereign in a transaction which required the exercise of the greatest ability and discretion. A beautiful Jewess was for many years the mistress of Alfonso IX., over whom her empire, while unbounded, was never abused; until at last the clergy, scandalized rather by the nationality of the favorite than by the gravity of the sin, caused her to be sacrificed to public resentment. It requires but a glance at the writings of the few mediæval reformers to infer how much consistency there was in this simulated indignation. The works of these alone are sufficient to establish the existence of universal sacerdotal depravity among those censors of public morals whose scruples were excited by the influence ascribed to the charms of a lovely infidel. Under Alfonso el Sabio, the Jews received greater consideration than under any other Christian monarch of Spain. The famous Alphonsine Tables, drawn up under the direction of Hebrew astronomers, were the most memorable scientific achievement of the epoch. Their cost, which exceeded the enormous sum of four hundred thousand ducats, is indicative not only of the interest of that prince in undertakings whose importance was neither understood nor appreciated elsewhere, but of the value attached to the services of great scholars, whose knowledge had been imparted by a civilization which their royal patron considered it his political and religious duty to eradicate.