Abstract

[Supposition of Mental Term according to William of Ockham :] This paper investigates Ockham ’s claim that there is a diversity of suppositions of a mental term. First, it summarizes the hitherto research in Ockham ’s theory of concepts and the theory of mental language ascribed to him. Secondly, it describes his theory of supposition, focusing on the interpretation of this theory which describes it as a device for interpretation of propositions. Thirdly, the paper examines the problems which arise from combining Ockham ’s theory concepts and his theory of supposition – namely, the problems concerning the nature of mental proposition, the question of mental syncategoremata, and of equivocation in mental language. Part 8 then reveals the absurdity of understanding the supposition of a mental term as an instrument for interpretation of mental propositions. Finally, I propose a new interpretation of the whole issue, based on Ockham ’s early commentary on the Sentences. According to this interpretation, the diversity of supposition of a mental term is not triggered by the need of distinguishing various meanings of a mental propositions, but by Ockham ’s nominalistic theory of science.