Salaman adapts himself externally to the popular religion and rules the people; Asal, seeking to perfect himself still further in solitude, goes to the other island. But there he finds a man, Hayy ibn Yaqzan, who has lived alone from infancy and has gradually, by the innate and uncorrupted powers of the mind, developed himself to the highest philosophic level and reached the Vision of the Divine. He has passed through all the stages of knowledge until the universe lies clear before him, and now he finds that his philosophy thus reached, without prophet or revelation, and the purified religion of Asal are one and the same. The story told by Asal of the people of the other island sitting in darkness stirs his soul and he goes forth to them as a missionary. But he soon learns that the method of Muhammad was the true one for the great masses, and that only by sensuous allegory and concrete things could they be reached and held. He retires to his island again to live the solitary life.

The bearing of this on the system of the Muwahhids cannot be mistaken. If it is a criticism of the finality of historical revelation, it is also a defence of the attitude of the Muwahhids toward both people and philosophers. By the favor of Abu Ya'qub, Ibn Tufayl had practically been able to live on an island and develop himself by study. So, too, Abu Ya'qub might stand for the enlightened but practical Salaman. Yet the meaning evidently is that between them they failed and must fail. There could only be a solitary philosopher here and there, and happy for him if he found a princely patron. The people which

knew not the truth were accursed. Perhaps, rather, they were children and had to be humored and guided as such in an endless childhood.

It is evident that such a solitary possessor of truth had two courses open to him. He could either busy himself in his studies and exercises, as had done Ibn Bajja and Ibn Tufayl, or he could boldly enter public life and trust to his dialectic ingenuity and resource—perhaps, also, to his plasticity of conscience—to carry him past all whispers of heresy and unbelief. The latter course was chosen by Ibn Rushd. He was born at Cordova, in 520, of a family of jurists and there studied law. From his legal studies only a book on the law of inheritance has reached us, and it, though frequently commented on, has never been printed. In 548 he was presented to Abu Ya'qub by Ibn Tufayl and encouraged by him in the study of philosophy. In it his greatest work was done. In spite of the shreds and patches of neo-Platonism which clung to him, he was the greatest mediaeval commentator on Aristotle. It is only part of the eternal puzzle of the Muslim mind that the utility of Greek for a student of Aristotle seems never to have struck him. Thereafter he acted as judge in different places in Spain and was court physician for a short time in 578 to Abu Ya'qub. In 575 he had written his tractates, to which we shall come immediately, mediating between philosophy and theology. Toward the end of his life he was condemned by Abu Yusuf al-Mansur for heresy and banished from Cordova. This was in all likelihood a truckling on the part of al-Mansur to the religious prejudices of the