Online research in philosophy

Two texts that raise problems for Alexander of Aphrodisias' theory of universals are examined. "De anima" 90.2-8 appears to suggest that universals are dependent on thought for their existence; this raises questions about the status both of universals and of forms. It is suggested that the passage is best interpreted as indicating that universals are dependent on thought only for their being recognised as universals. The last sentence of "Quaestio" 1.11 seems to assert that if the universal did not exist no individual would exist, thereby contradicting Alexander's position elsewhere. This seems to be a slip resulting from the fact that species with only one member are the exception rather than the rule.

On the relations of universals and particulars, by B. Russell.--Universals and resemblances, by H. H. Price.--On concept and object, by G. Frege.--Frege's hidden nominalism, by G. Bergmann.--Universals, by F. P. Ramsey.--Universals and metaphysical realism, by A. Donagan.--Universals and family resemblances, by R. Bambrough.--Particular and general, by P. F. Strawson.--The nature of universals and propositions, by G. F. Stout.--Are characteristics of particular things universal or particular? By G. E. Moore and G. F. Stout.--The relation of resemblance, by P. Butchvarov.--Qualities, by N. Wolterstroff.--On what there is, by W. V. Quine.--Empiricism, semantics, and ontology, by R. Carnap.--The languages of realism and nominalism, by R. B. Brandt.--Grammar and existence: a preface to ontology, by W. Sellars.--A world of individuals, by N. Goodman.--Bibliographical notes (p. [307]-308).

In his 1911 paper, “On the Relations of Universals and Particulars,” Bertrand Russell supposes the question whether universals are spatial or non spatial turns on the question of the existence of particulars. If particulars could be shown to exist, then since, according to Russell, they obviously are spatial, the non-spatiality of universals would be established. On the other hand, the denial of the existence of particulars would entail the spatiality of universals.In this paper, I argue that Russell’s claim is plausible only if particulars are construed either as quality instances or as ordinary objects. If, however, particulars are either substrata or collections of qualities, nothing follows in regard to the spatiality or the non-spatiality of universals. Since the alternative interpretations of particularity are, I contend, at least as attractive as Russell’s, his failure to consider them makes his position less interesting than it might otherwise have been.

This paper summarizes and extends the transmodal argument for the existence of universals (developed in full detail in "Universals"). This argument establishes not only the existence of universals, but also that they exist necessarily, thereby confirming the ante rem view against the post rem and in re views (and also anti-existentialism against existentialism). Once summarized, the argument is extended to refute the trope theory of properties and is also shown to succeed even if possibilism is assumed. A nonreductionist theory of universals and properties is then outlined, and it is sketched how to reap the benefits of possibilism and Meinongianism in an actualist setting.

The paper ends with an argument that says: necessarily, if there are finitely spatially extended particulars, then there are monadic universals. Before that, in order to characterize the distinction between particulars and universals, Roman Ingarden’s notions of existential moments and modes (ways) of being are presented, and a new pair of such existential moments is introduced: multiplicity–monadicity. Also, it is argued that there are not only real universals, but instances of universals (tropes) and fictional universals too.

Universals are usually considered to be universal properties. Since tropes are particular properties, if there are only tropes, there are no universals. However, universals might be thought of not only as common properties, but also as common aspects (“determinable universals”) and common wholes (“concrete universals”). The existence of these two latter concepts of universals is fully compatible with the assumption that all properties are particular. This observation makes possible three different trope theories, which accept tropes and no universals, tropes and determinable universals and tropes and concrete universals.

In this paper I explore the logical relationship between the question of the reality of qualia and the problem of universals. I argue that nominalism is inconsistent with the existence of qualia, and that realism either implies or makes plausible the existence of qualia. Thus, one's position on the existence of qualia is strongly constrained by one's answer to the problem of universals.

Universals: Loux, M. J. The existence of universals. Russell, B. The world of universals. Quine, W. V. O. On what there is. Pears, D. F. Universals. Strawson, P. F. Particular and general. Wolterstorff, N. Qualities. Bambrough, R. Universals and family resemblances. Donagan, A. Universals and metaphysical realism. Sellars, W. Abstract entities. Wolterstorff, N. On the nature of universals.--Particulars: Loux, M. J. Particulars and their individuation. Black. M. The identity of indiscernibles. Ayer, A. J. The identity of indiscernibles. O'Connor, D. J. The identity of indiscernibles. Allaire, E. B. Bare particulars. Chappell, V. C. Particulars re-clothed. Allaire, E. B. Another look at bare particulars. Meiland, J. W. Do relations individuate? Long, D. C. Particulars and their qualities. Copi, I. Essence and accident. Chandler, H. S. Essence and accident. Plantinga, A. World and essence.

Two texts that raise problems for Alexander of Aphrodisias' theory of universals are examined. "De anima" 90.2-8 appears to suggest that universals are dependent on thought for their existence; this raises questions about the status both of universals and of forms. It is suggested that the passage is best interpreted as indicating that universals are dependent on thought only for their being recognised as universals. The last sentence of "Quaestio" 1.11 seems to assert that if the universal did not exist no individual would exist, thereby contradicting Alexander's position elsewhere. This seems to be a slip resulting from the fact that species with only one member are the exception rather than the rule.