The examination of our own being must bring the solution of the problem. We must reach a point where we can say, "This is no longer merely 'I,' this is something which is more than 'I.'" I am well aware that many who have read thus far will not consider my discussion in keeping with "the present state of science." To such criticism I can reply only that I have so far not been concerned with any scientific results, but simply with the description of what every one of us experiences in his own consciousness. That a few phrases have slipped in about attempts to reconcile Mind and the World has been due solely to the desire to elucidate the actual facts. I have therefore made no attempt to give to the expressions "Self," "Mind," "World," "Nature," the precise meaning which they usually bear in Psychology and Philosophy. The ordinary consciousness ignores the sharp distinctions of the sciences, and so far my purpose has been solely to record the facts of everyday experience. I am concerned, not with the way in which science, so far, has interpreted consciousness, but with the way in which we experience it in every moment of our lives. III THOUGHT AS THE INSTRUMENT OF KNOWLEDGE When I observe how a billiard ball, when struck, communicates its motion to another, I remain entirely without influence on the process before me. The direction and velocity of the motion of the second ball is determined by the direction and velocity of the first. As long as I remain a mere spectator, I can say nothing about the motion of the second ball until after it has happened. It is quite different when I begin to reflect on the content of my observations. The purpose of my reflection is to construct concepts of the process. I connect the concept of an elastic ball with certain other concepts of mechanics, and consider the special circumstances which obtain in the instance in question. I try, in other words, to add to the process which takes place without my interference, a second process which takes place in the conceptual sphere. This latter process is dependent on me. This is shown by the fact that I can rest content with the observation, and renounce all search for concepts if I have no need of them. If, therefore, this need is present, then I am not content until I have established a definite connection among the concepts, ball, elasticity, motion, impact, velocity, etc., so that they apply to the observed process in a definite way. As surely as the occurrence of the observed process is independent of me, so surely is the occurrence of the conceptual process dependent on me.