Seminar paper from the year 2009 in the subject Philosophy - Theoretical (Realisation Science Logic Language) grade: 1.7 Bielefeld University course: Gilbert Ryle language: English abstract: The main objective of this paper is to discuss how official doctrine and Gilbert Ryle explain how one performs an intentional action. Gilbert Ryle developed his theory of mind in his book The Concept of Mind (1949) against the Cartesian dualism. The official doctrine is mainly originates from René Descartes mind-body dualism. Concerning the official doctrine I aspire to elucidate two main aspects: Firstly I will epitomize important aspects of mind-body parallelism. More precisely I will illustrate taking into account the official doctrine that mind and body are two separate entities. Secondly I will illustrate mind-body interactionalism.