1. aqui`nas, thomas the Angelic Doctor, or Doctor of the Schools, an Italian of noble birth, studied at Naples, became a Dominicanmonkdespite the opposition of his parents, sat at the feet of Albertus Magnus, and went with him to Paris, was known among his pupils as the "Dumb Ox," from his stubborn silence at study, prelected at his Alma Mater and elsewhere with distinguished success, and being invited to assist the Council at Lyons, fellsick and died. His "Summa Theologiæ," the greatest of his many works, is a masterly production, and to this day of standardauthority in the Romish Church. His writings, which fill 17 folio vols., along with those of Duns Scotus, his rival, constitute the high-watermark of scholasticphilosophy and the watershed of its divergence into the philosophico-speculative thought on the one hand, and the ethico-practical or realism of moderntimes on the other, q. v. (1226-1274).