Friedrich Nietzsche’s Twilight of the Idols presents one of his clearest critiques of Western metaphysics, a philosophical tradition that extends from Plato to Immanuel Kant and posits a “true world” of unchanging being beyond the changing sensory world of appearance and becoming. Rejecting this distinction, Nietzsche argues for a form of philosophical naturalism that regards the senses as the primary means of understanding reality. Art, in this view, does not create a false appearance but reconfigures what is real. As scholar Jeremy Page notes, “The association of art with appearance in Twilight does not lend support for the orthodox reading that Nietzsche values art because it distorts reality” (Page, Jeremy. “Nietzsche Contra Schopenhauer on Art and Truth.” The Monist, vol. 107, no. 4, 2024, pp. 378-92). Instead, art selects, reinforces, and intensifies reality.

This anti-metaphysical stance animates Nietzsche’s critique of reason and grammar, which he argues create fictions of unity, substance, and cause where there is only fluid becoming. He charts the historical decay of the true/apparent world distinction, concluding with its ultimate demolition: “The true world—we have abolished. What world has remained? The apparent one perhaps? But no! With the true world we have also abolished the apparent one” (20). His supporting theses argue that evidence for the “apparent” world confirms its reality, that criteria for “true being” describe nothingness, and that belief in another world is a life-denying symptom of decadence. Philosophy’s task is thus reframed: It becomes a diagnostic tool for assessing the psychological health of the instincts that produce metaphysical beliefs.