is identical with the Morning Star’. This contrasts with trivial and perhaps degenerate statements, such as ‘The Evening Star is identical with the Evening Star’, which are almost never made in ordinary or scientific discourse. The former are essential to any coherent, systematic cognition (even to everyday recognition of persons and places). Yet they are puzzling. We cannot say that they assert of two things that they are one, even though ordinary language suggests precisely this. Neither can we just say that they assert that a certain thing is identical with itself, for this view would be obviously false if the statements are informative. The fact that Frege’s example includes definite descriptions (‘the Evening Star’, ‘the Morning Star’) is irrelevant, contrary to Russell’s view. Informative identity statements can also have as their subject terms proper names and even demonstrative pronouns (e.g., ‘Hesperus is identical with Phosphorus’ and ‘This [the shape of this page] is identical with that [the shape of the next page]’), the reference of which is established not by description but ostensively, perhaps by actual pointing. Concerning (D) we can ask about the nature of the relationship, usually called instantiation or exemplification, between an entity and its properties and relations. Surely, there is such a relationship. But it can hardly be like an ordinary relation such as marriage that connects things of the same kind. And we can ask what is the connection between that relation and the entities it relates, e.g., the individual thing on one hand and its properties and relations on the other. Raising this question seems to lead to an infinite regress, as Bradley held; for the supposed connection is yet another relation to be connected with something else. But how do we avoid the regress? Surely, an individual thing and its properties and relations are not unrelated items. They have a certain unity. But what is its character? Moreover, we can hardly identify the individual thing except by reference to its properties and relations. Yet if we say, as some have, that it is nothing but a bundle of its properties and relations, could there not be another bundle of exactly the same properties and relations, yet distinct from the first one? (This question concerns the so-called problem of individuation, as well as the principle of the identity of indiscernibles.) If an individual is something other than its properties and relations (e.g., what has been called a bare particular), it would seem to be unobservable and thus perhaps unknowable. Concerning (E), virtually no philosopher has questioned the law of non-contradiction. But there are important questions about its status. Is it merely a linguistic convention? Some have held this, but it seems quite implausible. Is the law of non-contradiction a deep truth about being qua being? If it is, (E) connects closely with (B) and (C), for we can think of the concepts of self-consistency, identity, and existence as the most fundamental metaphysical concepts. They are also fundamental to logic, but logic, even if ultimately grounded in metaphysics, has a rich additional subject matter (sometimes merging with that of mathematics) and therefore is properly regarded as a separate branch of philosophy.
The word ‘metaphysics’ has also been used in at least two other senses: first, the investigation of entities and states of affairs ‘transcending’ human experience, in particular, the existence of God, the immortality of the soul, and the freedom of the will (this was Kant’s conception of the sort of metaphysics that, according to him, required ‘critique’); and second, the investigation of any alleged supernatural or occult phenomena, such as ghosts and telekinesis. The first sense is properly philosophical, though seldom occurring today. The second is strictly popular, since the relevant supernatural phenomena are most questionable on both philosophical and scientific grounds. They should not be confused with the subject matter of philosophical theology, which may be thought of as part of metaphysics in the general philosophical sense, though it was included by Aristotle in the subject matter of metaphysics in his sense of the study of being qua being.
See also BUNDLE THEORY, CAUSATION, NAT- URALISM , PHILOSOPHY OF RELIGION , PROP – ERTY , TIM. P.Bu.