Abstract

Are there universal properties grounding our sense of resemblance or qualitative identity among a number of distinct things or events which appear to form a class, a type or a kind of some other sort? Do universals such as humanness, triangularity, or being an Oak exist? Is being a laptop computer a universal, which has only recently come into existence? Do predicate expressions, adjectives or abstract nouns refer to objective properties or cognitive contents called concepts? The problem of universals has been at the centre of ancient, medieval, Western, and Indian metaphysics. After the logico-linguistic turn in philosophy, this problem re-surfaced in the discourse on the meaning of predicate expressions on the one hand and in the theories of concepts on the other.