Schopenhauer's Pessimism as Response to Kant's Rationalism

Arthur Schopenhauer's “The World as Will and Representation” is a continuation and completion of the Kantian philosophical project. Schopenhauer proposes that rather than causality being an empirical consequence, as Kant implies in his Critique of Pure Reason, causality is an a priori phenomenon, happening independent of any knowledge of causality itself. Therefore, he challenges Kantian rationalism with pessimism. To begin this work stating the stark contrast between Kant’s epistemology and Schopenhauer’s, I note the few yet crucial characteristics to consciously consider from Schopenhauer’s aesthetics: (1) there is no rationality to nature; (2) there is no ‘purposeness’ in life; and (3) human beings are not fundamentally rational. These each are expanded upon and discussed in unison with Kant's sentiments. In describing Schopenhauer's philosophy of the human experience, it is useful to refer to his interest in Indian philosophies and religions, which is briefly mentioned in this work by way of the famous paradox proposed by Nāgārjuna. The major point of divergence, it appears, between the two great minds reveals itself in their conception of the human experience and perception. Kant describes a reality consisting of mental representations whose nature is suggested to be a posteriori, Schopenhauer understands reality to be noumenal and its perception by sentient life to be indirect, subject-dependent, and consequently a priori.