1. Thomas H Brobjer chronicles Nietzsche’s positive relationship with both Kant and Schopenhauer (Nietzsche’s Philosophical Context (Urbana: University of Illinois Press, 2008), 28–40).
2. Nietzsche writes in an incomplete essay of 1868: “we are compelled to protest against the predicates Schopenhauer assigns to his will, which sound much too determinate for something ‘unthinkable as such’, and are obtained simply by opposition to the world of representation”. (“On Schopenhauer”, trans. Christopher Janaway, in Willing and Nothingness: Schopenhauer as Nietzsche’s Educator, ed. Christopher Janaway (Oxford: Claredon Press, 1998) 258–265).
3. I am interested in how Kantian themes influenced the direction of Nietzsche’s thoughts on truth, and in bringing to light the shape that these thoughts began to take. I am not concerned here with whether Nietzsche correctly understood and critiqued the notion of the thing-in-itself as it appears in Kant, nor do I directly address the question of how Kantian Nietzsche’s ultimate position is. For an interesting discussion of the extent to which Nietzsche’s position bears an affinity to Kant, see Tsarina Doyle, “Nietzsche’s Appropriation of Kant”, Nietzsche Studien 33 (2004): 180–204.
4. Arthur Schopenhauer, Die Welt Als Wille und Vorstellung (Leipzig: Brockhaus, 1844).
5. Friedrich Albert Lange, Geschichte des Materialismus und Kritik seiner Bedeutung in der Gegenwart (Leipzig: Iserlohn, 1866)