If, in the case of, drive and reality could not be explained reciprocally, one on the basis of the other if the drive were directed toward a reality that was not missing from A and did not pertain to, and if, in turn, the drive were not directed toward a reality that was indeed missing in A and did pertain to A then A could not be explained and comprehended on the basis of itself alone, and anyone reflecting on A would be driven farther.