This characterological element of Bahnsen's teachings, on which the works of such philosophers as Ludwig Klages are built upon, is laid down in the "Contributions to Characterology" (1867) as well as the disquisitions "On the Relationship Between Will and Motive" (1870) and "Mosaics and Silhouettes" (1877). Since the nature of unreasonableness consists in contradiction—particularly the contemporaneous existence of multiple will directions attaching themselves to each other—it follows that not only reality is a continuous struggle of material contrasts (real-dialectic), but that the inside of each individual is addicted to the insolvable antagonism of opposite will directions (will collisions) as well. Bahnsen negates a redemption of the countless will units ("will henades", as he expresses it himself) and postulates the permanence of the existence of the contradiction as a basic nature of the world, whereby the law of this world becomes a tragic world order.