Abstract

Arthur Schopenhauer’s system, as elaborated in The World as Will and Representation (1st ed.: 1819) and in the Berlin Lectures (1820s), is divided into four parts: 1. the so-called ‘epistemology’, 2. metaphysics (of nature), 3. metaphysics of the beautiful or aesthetics, 4. metaphysics of morals or ethics. The part on ‘epistemology’ is divided into two parts: the doctrine of cognition and the doctrine of reason. Whereas the doctrine of cognition discusses the three conditions for the possibility of cognition, i.e., space, time, and causality, the doctrine of reason is divided into three faculties: language, (science of) knowing, and practical reason. This paper gives an informal overview of the research on the doctrine of reason, especially on logic, that has been conducted in recent years.