"Plum-Picking with Niamh Clune."
Thanks to Niamh Clune for the comprehensive definition
The term, Metaphysical literature, originally referred to poetic works from the 17th century and defined intellectually challenging poetry. Striving to incorporate the incorporeal, the transcendent, the noumenal, the subject matter itself posed a problem and poses it still. According to philosophers such as Nietzsche and Kant, nothing can be known about noumenal reality, not even that it exists.