Paschasius, then, was a poet and a musician, but he was also a scientific theologian, and one who was in some degree in advance of his age in the philosophic method he adopted when analysing the dogmas of faith. In the year 831 he wrote his famous treatise on the “Sacrament of the Altar,” which was specially intended for the instruction of his Saxon pupils, who required a plain and comprehensive exposition of that mystery. He composed it, therefore, in a very simple style, comparing it to “milk for babes;” and it is evident that in a treatise drawn up under such circumstances, for the instruction of young converts, the author would necessarily seek, not the setting forth of theological subtleties or private views, but the simple, straightforward statement of the Church’s doctrine as universally taught and believed by all the faithful. He declares in very express and distinct terms that “the _substance of bread_ is not to be found in the Sacrament, and that there is present only the Real Body of Jesus Christ, the same that was born of the B. Virgin, and was crucified, and rose again, and ascended into Heaven.”[95] The treatise was dedicated to Warin, abbot of New Corby, and excited no controversy until fifteen years later, when a second edition, dedicated to Charles the Bald, fell into the hands of Scotus Erigena, whose captious mind found matter of offence in the expressions used by Paschasius. He, accordingly, wrote in reply _his_ treatise on the “Holy Eucharist,” of which no copy now exists; for, after being condemned by several Councils, all the copies that could be found were ordered to be burnt in 1059, in consequence of the use made of them by the Berengarian heretics. Paschasius defended his words by a simple appeal to the universal sense of Christendom, which, since the days of the Apostles, had never ceased to believe and confess this salutary doctrine. At the time when this vexatious controversy broke out he was abbot of his monastery, and soon after retired from office, and joyfully returned to his cell and his studies, spending his last days in the completion of his greatest work, the “Commentary on St. Matthew’s Gospel.” Whether in public or private life, his lowliness of spirit was equally remarkable, while the self-sufficient presumption of his opponent Erigena exhibits an ugly example of that knowledge which puffeth up. In Paschasius we see the opposite virtue, which faileth not “when tongues shall cease and knowledge shall be destroyed.” He styled himself by no more honourable title than the “Monachorum Peripsema,” and in his last sickness imposed so strict an injunction on his brethren never to write his life, that they dared not disobey him, and thus many interesting particulars concerning him have necessarily been lost.