Neither Aristotle nor Averrhoës could be got rid of by papal inhibition. The keenest interest had been aroused in them. It were better, as it was simpler, to utilize such keenness rather than to attempt to combat it. Of all the great services rendered to the Church by the Dominican order none was greater than its capture of profane learning for orthodox Christianity. The great Franciscans were expounding the current theology of the day with its tinge of Platonism; the Dominicans now came forward to adapt Aristotle for the service of Christianity. In 1256 Alexander IV commissioned Albertus Magnus to write his ‘De unitate intellectus contra Averroëm’: a fact that is proof positive of the headway that had already been made not only by Aristotelianism but by the tenets of the ‘great commentator.’ The tractate is indeed written against Averrhoës himself, not Averrhoïsts, but the fact that the Pope entrusted Albert of Cologne with the task of answering the former is evidence of the activity of the latter.[84] Fifteen years later Thomas Aquinas produced another work on the same subject: but this one definitely ‘contra Averroïstas.’ Between the years 1261 and 1269 Aquinas was, together with William of Moerbeke, at the court of Rome engaged upon the great task, now at length undertaken under the auspices of the Holy See, of making a translation and commentary on Aristotle. In the latter year he appeared at Paris on the occasion of the assembly there of a chapter-general of the Dominican order. It has been maintained that the real reason of his presence was to clear the Prædicants of the suspicion of Averrhoïsm.[85]