“As Schopenhauer writes in the second volume, commenting on the ending of the first: 'it is in keeping with this that, when my teaching reaches its highest point, it assumes a negative character, and so ends with a negation.' But Schopenhauer's point is that this is a relative nothing, not an absolute nothing: it is a nothing that might yet be something, if seen from a different perspective: 'Now it is precisely here that the mystic proceeds positively, and therefore, from this point, nothing is left but mysticism'.
Mysticism: the knowledge of the incommunicable: the great foe of Enlightenment philosophers from Bayle to Kant. Surely, if mysticism begins where philosophy ends, Schopenhauer's point must be: so much the worse for mysticism. But while it is true that Schopenhauer sees mysticism and philosophy as incommensurable in principle, nevertheless, as Young points out, Schopenhauer evaluates mysticism positively. Not only do the last words of the first volume leave open a space for mystical knowledge by the relativity of nothingness - but in the second volume, Schopenhauer also points to the wide agreement of mystical experience across different cultures and traditions. Hence, against the common interpretations of Schopenhauer as nihilist or 'absolute pessimist', Young argues that such readings are 'insensitive to the intense theological preoccupation that permeates, particularly, Book IV'. According to Young, Schopenhauer's concept of resignation is not purely negative, but also oriented towards some darkly intuited positive element: an existence of another kind. When Schopenhauer says that the saintly ascetic achieves redemption, he is speaking of an other-wordly state, and that is why he opposes Stoic ataraxia, which, being a this-worldly solution, leads away from salavation, rather than towards it. In Young's view, therefore, not only does Schopenhauer accept a 'field of illuminism' or mysticism - but 'it is upon the veridicality of mystical insight into another, ecstatic world, a world relative to which this one is a mere "dream", that, for Schopenhauer, our only chance of "salvation" depends.”