In opposition to the traditional philosophic, religious, and aesthetic conception of the senses, in Nietzsche’s epistemic order, every sense is not only positively valued but also often “crossed” with other senses. While the limited few scholars who actually address Nietzsche’s conception of synaesthesia assert that his depiction and use of it is strictly metaphoric, in fact, it is often precisely the opposite—the phenomenon is conveyed as a distinct reality. Nietzsche was knowledgeable of synaesthesia through medical, aesthetic, and philosophic sources and a persistent engagement with it can be traced throughout his corpus. Further, his interest in synaesthesia may signal that he himself was synaesthetically inclined. While that cannot be definitively ascertained, aside from the testimony of his philosophy, there are several intriguing allusions he makes in letters indicating that he may presumably have had experiential knowledge of the phenomenon.
Syn-Episteme-Master