For one could assert nothing at all of the metaphysical world except that it was a being-other, an inaccessible, incomprehensible being-other; it would be a thing with negative qualities. – Even if the existence of such a world were never so well demonstrated, it is certain that knowledge of it would be the most useless of all knowledge: more useless even than knowledge of the chemical composition of water must be to the sailor in danger of shipwreck.
