Abstract: This paper utilizes a diagrammatic language for expressing certain philosophical notions, such as possible worlds, beliefs, and propositions. The focus is on a diagrammatic representation that depicts “things” to show how their various important properties and relations can be explicated in terms of diagrams. The paper does not add a new contribution to philosophy (what is said in it); rather, it contributes a representation tool for philosophy. Akin to specifications in software engineering, the proposed is to provide a complementary technique for expressing different aspects of the involved philosophical concepts that are typically presented in the form of textual explanations. The resultant diagrams seem to be a viable tool that can be utilized in teaching, in communication, and to facilitate an understanding of philosophical problems.
Keywords: diagrammatic representation; philosophical diagrammatic language; possible worlds