Träume eines Geistersehers erläutert durch Träume der Metaphysik

"In his Commentary on "Kant's Transcendental Asthetic, Lecture i. on Space," where the problem is under discussion whether space be (i.) purely Objective and a posteriori (Newton), or (ii) purely subjective and a priori (Kant), or (iii.) according to Treudelenburg's "Third Possibility," at once Objective and Subjective (Leibnitz), Professor Vaihinger introduces a note on Lambert's suggestion."