Thomism I. The Doctrine in General. In a broad sense, Thomism is the name given to the system which follows the teaching of St. Thomas Aquinas in philosophical and theological questions. In a restricted sense the term is applied to a group of opinions held by a school called Thomistic, composed principally, but not exclusively, of members of the Order of St. Dominic, these same opinions being attacked by other philosophers or theologians, many of whom profess to be followers of St. Thomas. To Thomism in the first sense are opposed, e.g., the Scotists, who deny that satisfaction is a part of the proximate matter (materia proxima) of the Sacrament of Penance. Anti-Thomists, in this sense of the word, reject opinions admittedly taught by St. Thomas. To Thomism in the second sense are opposed, e.g. the Molinists, as well as all who defend the moral instrumental causality of the sacraments in producing grace against the system of physical instrumental causality, the latter being a doctrine of the Thomistic School. Anti-Thomism in such cases does not necessarily imply opposition to St. Thomas: It means opposition to tenets of the Thomistic School. Cardinal Billot, for instance, would not admit that he opposed St. Thomas by rejecting the Thomistic theory on the causality of the sacraments. In the Thomistic School, also, we do not always find absolute unanimity. Baflez and Billuart do not always agree with Cajetan, though all belong to the Thomistic School. It does not come within the scope of this article to determine who have the best right to be considered the true exponents of St. Thomas. The subject may be treated under the following headings: I. Thomism in general, from the thirteenth century down to the nineteenth; II. The Thomistic School; III. Neo-Thomism and the revival of Scholasticism. A. Thomism in General. Early Opposition Overcome. Although St. Thomas (d. 1274) was highly esteemed by all classes, his opinions did not at once gain the ascendancy and influence which they acquired during the first half of the fourteenth century and which they have since maintained. Strange as it may appear, the first serious opposition came from Paris, of which he was such an ornament, and from some of his own monastic brethren. In the year 1277 Stephen Tempier, Bishop of Paris, censured certain philosophical propositions, embodying doctrines taught by St. Thomas, relating especially to the principle of individuation and to the possibility of creating several angels of the same species. In the same year Robert Kilwardby, a Dominican, Archbishop of Canterbury, in conjunction with some doctors of Oxford, condemned those same propositions and moreover attacked St. Thomas's doctrine of the unity of the substantial form in man. Kilwardby and his associates pretended to see in the condemned propositions something of Averroistic Aristoteleanism, whilst the secular doctors of Paris had not fully forgiven one who had triumphed over them in the controversy as to the rights of the mendicant friars. The storm excited by these condemnations was of short duration. Blessed Albertus Magnus, in his old age, hastened to Paris to defend his beloved disciple. The Dominican Order, assembled in general chapter at Milan in 1278 and at Paris in 1279, adopted severe measures against the members who had spoken injuriously of the venerable Brother Thomas. When William de la Mare, O.S.F., wrote a "Correptorium fratris Thom~", an English Dominican, Richard Clapwell (or Clapole), replied in a treatise "Contra corruptorium fratris Thomae". About the same time there appeared a work, which was afterwards printed at Venice (1516) under the title, "Correctorium corruptorii S. Thomae", attributed by some to AEgidius Romanus, by others to Clapwell, by others to Father John of Paris. St. Thomas was solemnly vindicated when the Council of Vienna (1311-12) defined, against Peter John Olivi, that the rational soul is the substantial form of the human body (on this definition see Zigliara, "De mente Conc. Vicnn.", Rome, 1878). The canonization of St. Thomas by John XXII, in 1323, was a death-blow to his detractors. In 1324 Stephen de Bourret, Bishop of Paris, revoked the censure pronounced by his predecessor, declaring that "that blessed confessor and excellent doctor, Thomas Aquinas, had never believed, taught, or written anything contrary to the Faith or good morals". It is doubtful whether Tempier and his associates acted in the name of the University of Paris, which had always been loyal to St. Thomas. When this university, in 1378, wrote a letter condemning the errors of John de Montesono, it was explicitly declared that the condemnation was not aimed at St. Thomas: "We have said a thousand times, and yet, it would seem, not often enough, that we by no means include the doctrine of St. Thomas in our condemnation." An account of these attacks and defences will be found in the following works: Echard, "Script. ord. prad.", I, 279 (Paris, 1719); De Rubeis, "Diss. crit.", Diss. xxv, xxvi, I, p. cclxviii; Leonine edit. Works of St. Thomas; Denifle, "Chart. univ. Paris" (Paris, 1890-91), I, 543, 558,