Nicolaï, JEAN, celebrated Dominican theologian and controversialist, b. in 1594 at Mouzay in the Diocese of Verdun, France; d. May 7, 1673, at Paris. Entering the order at the age of twelve, he made his religious profession in 1612, studied philosophy and theology in the convent of St. James at Paris, obtained (1632) the doctorate in theology at the Sorbonne, and taught these branches with distinction in various houses of the order. He was highly esteemed for strict observance of the rule, prudence, rare erudition, and power of penetration. Besides Latin and Greek he was conversant with Italian, Spanish, and He-brew. He was a member of the commission appointed to examine the works and teachings of the Jansenists and to prevent the further dissemination of their doctrine in the Sorbonne. In the disputes on grace between the Thomists and Molinists, which the teaching of Jansenius revived, he adhered strictly to the Thomistic doctrine. His numerous works fall into three classes: (a) new editions of older theologians which he supplied with commentaries and explanatory notes; (b) his own theological works; (c) his poetical and political writings. The most important of the first class are “Raineri de Pisis  ord. Fr. Praed. Pantheologia sive universa theologia ordine alphabetico per varios titulos distributa” (Lyons, 1670): to each of the three volumes of this work he added a dissertation against the Jansenists; “S. Thomas Aq. Expositio continua super quatuor evangelistas” (Lyons, 1670); “S. Thomas Aq. commentaria in quatuor libros sententiarum P. Lombardi” (Lyons, 1659); “Commentarius posterior super libros sententiarum” (Lyons, 1660); “S. Thomas Aq. quxstiones quodlibetales” (Lyons, 1660); “S. Thomas Aq. Summa theologica innumeris Patrum, Conciliorum, scripturarum ac decretorum testimonies ad materias controversas vel ad moralem disciplinam pertinentibus … illustrata” (Lyons, 1663); “S. Thomas Aq. explanatio in omnes d. Pauli Ap. epistolas commentaria” (Lyons, 1689). His important theological works are: “Judicium seu censorium suffragium de propositione Ant. Arnaldi sorbonici doctoris et socii ad quwstionem juris pertinente” (Paris, 1656); “Theses theologicae de gratia seu theses molinisticae thomisticis notis expunctm” (Paris, 1656); “Apologia naturae et gratiae” (Bordeaux, 1665). Against Launoy, the champion of the “Gallivan Liberties”, he wrote: “De jejunii christiani et christianae abstinentiae vero ac legitimo rite” (Paris, 1667); “De Concilio plenario, quod contra Donatistas baptismi qustionem ex Augustini sensu definivit” (Paris, 1667); “De plenari Concilii et baptismatis hereticorum assertione dissertatio posterior anteriorem firmans” (Paris, 1668); “De baptismi antiquo usu ab Ecclesia instituto, dissertatio” (Paris, 1668); “De Constantini baptismo, ubi, quando et a quibus fuerit celebratus historica dissertatio” (Paris, 1680). The purpose of his poetical and political writings seems to have been to extol the dignity and glory of France and her kings. Thus, he delivered in Rome in 1628 a panegyric in honor of the victory of Louis XIII at La Rochelle and in 1661 composed a poem in honor of the son of Louis XIV. He was highly esteemed at the royal court and received a pension of 600 francs. He was buried in the chapel of the convent of St. James in Paris, and a marble stone beside the grave bears a long inscription recounting his virtues, his learning, and his services to his country.