[a. Roscelinus.]
The beginning of the controversy dates back to the eleventh century, Roscelinus being the earliest Nominalist. The famous Abelard, although he professes to be an opponent of Roscelinus, is himself nothing more or less than a Nominalist. Roscelinus wrote also against the doctrine of the Trinity, and was pronounced guilty of heresy in 1092 at an ecclesiastical council which met at Soissons. His influence was, however, but small.[36]
The matter in question is the universal as such (universale), or the genus, the essence of things, what in Plato was called the Idea—for instance, Being, humanity, the animal. The followers of Plato asserted that these universals exist; their existence was individualized, and thus ‘tableness’ was said to be also a real existence (supra, Vol. II. p. 29). We make representations of a thing to ourselves, and say “it is blue;” this is a universal. The question now is whether such universals are something real in and for themselves, apart from the thinking subject, and independent of the individual existing thing, so that they exist in the individual things independently of the individuality of the thing and of each other; or whether the universal is only nominal, only in the subjective representation, a thing of thought. Those who maintained that the universals had a real existence apart from the thinking subject and distinct from the individual thing, and that the Idea alone constitutes the essence of things, were termed Realists—a use of the term in quite an opposite sense to that which passes current now. I mean that this expression has for us the signification that things as they are in their immediacy have an actual existence; and to this idealism is opposed, that being a name which was given later to the philosophy which ascribes reality to ideas alone, and asserts that things as they appear in their individuality have no truth. The realism of the Scholastics in the same way maintained that the Universal has an independent, absolute existence, for Ideas are not liable to destruction, like natural things, therefore they are immutable and the only true existence. In opposition to this, the others, the Nominalists or Formalists, asserted that if generals or universals are formed, these are only names, matters of form, representations which we make to ourselves, a subjective generalization, a product of the thinking mind; the individual alone is the real.
This is then the matter in question; it is of great interest, and is founded upon a much higher opposition than any the ancients knew of. Roscelinus made universal conceptions arise only from the necessities of language. He maintained that ideas or universals, like Being, life, reason, are in themselves nothing but mere abstract notions or generic names, which, as such, have in and for themselves no universal reality of their own: that which has Being and life is found in the individual alone. Against these assertions arguments are brought forward by which one can see that the manner in which the Christian world was taken as basis, often became in the highest degree ridiculous. For instance, Abelard reproaches Roscelinus for having asserted that no thing has parts, that only the words which denote the things are divisible. Abelard proved that according to Roscelinus, Christ did not eat a real part of the broiled fish, but only a part—I do not know which—of the word “broiled fish,” since according to him there were no parts—which interpretation would be preposterous and highly blasphemous.[37] Our way of reasoning from “healthy human understanding,” is not much better.
[b. Walter of Mortagne.]
Walter of Mortagne (d. 1174) aimed at the union of the particular and the universal, saying that the universal must be individual, that universals must be united with individuals in accordance with their essence.[38] In later times the two rival factions were known to fame as Thomists, from the Dominican Thomas Aquinas, and Scotists, from the Franciscan Johannes Duns Scotus. Nevertheless, the original question as to whether universal notions have reality, and, if so, to what extent they have it, underwent a great variety of modifications and gradations, just as the opposing parties received very various names. Nominalism, in its crude form, declared universal notions to be mere names, which have reality only in speech, and it ascribed reality to individuals alone; Realism followed the exactly opposite course of attributing reality only to universals, while it considered that what distinguished individual things was an accident only or a pure difference. Neither of these two theories was correct in the manner of passing from the universal to the particular. There were some, however, among the Schoolmen who grasped the true conception that individuation, the limitation of the universal, and indeed of what is most universal, Being and entity, is a negation. Others said that the limit is itself something positive, but that it is not one with the universal by union with it, for it rather stands in a metaphysical connection with it, that is, in a connection such as that which binds thought with thought. This implies that the individual is only a clearer expression of what is already contained in the general conception; so that these conceptions, in spite of their being divided into parts and differentiated, still remain simple; Being or entity, moreover, really is a Notion.[39]
Thomas, who was a Realist, declared the universal Idea to be indeterminate, and placed individuation in determinate matter (materia signata), i.e. matter in its dimensions or determinations. According to him, the original principle is the universal Idea; the form, as actus purus, may, as with Aristotle, exist on its own account; the identity of matter and form, the forms of matter, as such, are further removed from the original principle,—while thinking substances are mere forms.[40] But for Scotus the universal is rather the individual One, the one he thinks may appear also in the other; he maintained therefore the principle of individuation, and the formal character of the universal. In his view indeterminate matter becomes individual through an inward positive addition; the substantial forms of things are their real essence. Occam thus represents the views of Scotus: “In the thing that exists outside of the soul the same Nature exists realiter with the difference limiting (contrahente) it to a determinate individual, being only formally distinguished, and in itself neither universal nor individual, but incompletely universal in the thing, and completely universal in the understanding.”[41] Scotus racked his brains much over this subject. To universals the Formalists allowed only an ideal reality in the divine and human intellect beholding them.[42] We thus see how closely connected with this is the thought which we first meet with in the Scholastics, namely the seeking and giving of so-called proofs of God’s existence (supra, pp. 62-67).
[c. William Occam.]
The opposition between Idealists and Realists appeared at an early stage, it is true, but it was not until later, after the time of Abelard, that it became the order of the day, and was invested with general interest. This was brought about chiefly by the Franciscan William Occam, of the village of Occam in the county of Surrey in England, who was surnamed Doctor invincibilis, and flourished in the beginning of the fourteenth century: the year of his birth is unknown. He is greatly celebrated for his skill in handling the weapons of logic; he is keen in discrimination and fertile in devising arguments and counter-arguments. Occam was a leading champion of Nominalism, which up to this time had found only here and there a defender, like Roscelinus and Abelard; his numerous followers received the name of Occamists and were Franciscans, while the Dominicans retained the name of Thomists. The conflict between Nominalists and Realists raged with a burning vehemence, and was carried to the greatest extremes; a pulpit is still shown which was separated by a wooden partition from the platform of the opponent, in order that the disputants might not come to blows. Henceforth theology was taught under two forms (theologia scholastica secundum utramque partem). Owing to the civil wars in France, politics also began gradually to affect the relationship between the orders, and this lent increased importance to the conflict into which jealousy had plunged the rival factions. In 1322, at a convention of his order, and also on other occasions, Occam and his order defended to the utmost of their power the claims of the different princes, such as the King of France and the Emperor of Germany, Louis of Bavaria, against the pretensions of the Pope. Among the words of William to the Emperor were these, “Do thou defend me with the sword, and I will defend thee with the pen.” Interdicts of the Paris University and Papal bulls were issued against Occam. The Paris University forbade his doctrines to be taught or his works quoted. A special prohibition was issued in 1340: “No teacher shall venture to assert plainly, or in so many words, that some familiar maxim of the author on whom he is lecturing is false, but shall either assent to it, or distinguish the true and the false significance; otherwise the dangerous result is to be apprehended that the truths of the Bible might be in like manner rejected. No teacher shall assert that a maxim cannot be thus explained or further defined.” Occam was excommunicated in 1328, and died at Munich in 1343.[43]
Occam asks in one of his writings (in libr. I. Sentent. Dist. II. Quæst. 4), “Whether what is immediately and proximately denoted by the universal and by the generic name is a real thing outside of the soul, something intrinsic and essential in the things to which it is common and which are called by its name, and yet in reality distinguished from them.” This definition of the Realists is given more in detail by Occam as follows: “As to this question, one opinion is that each generic designation or universal is a thing really existing outside of the soul in each and every individual, and that the Being (essentia) of each individual is really distinguished from each individual” (i.e. from its individuality), “and from each universal. Thus man, the universal, is a true thing outside of the soul, which exists in reality in each human being, but is distinguished from each human being, from Universal living nature, and from the universal substance, and in this way from all species and genera, those that are subordinate as well as those that are not subordinate.” The universal, the common designation of all the individuals, is therefore, according to this, not identical with the Self, the ultimate point of subjectivity. “As many universal predicables as there are of any individual thing”—e.g. humanity, reason, Being, life, quality, &c.—“so many really different things there are in nature, each of which is really distinct from the other and from that individual, and all these things are in no wise multiplied in themselves, however much the separate predicables are multiplied, which are in every individual of the same kind.” That is the most uncompromising way of stating the independence and isolation of every universal quality in a thing. Occam refutes this, saying: “Nothing which is one in number can, without being changed or multiplied, be present in several subjects or individuals. Science invariably restricts itself to propositions regarding the known; it is, therefore, a matter of no moment whether the terms of the propositions are known things outside of the soul, or only in the soul; and therefore it is not necessary for the sake of science to assume universal things, really distinct from individual things.”