The Philosophy of Freedom Study Group
The Act Of Knowing The World
5-0 [0]) MOOD OF VOLUNTARISM [0] (Mars)
[1] From the foregoing considerations it follows that it is impossible to prove by investigating the content of our observation that our percepts are mental pictures. Such proof is supposed to be established by showing that, if the process of perceiving takes place in the way in which — on the basis of naïve-realistic assumptions about our psychological and physiological constitution — we imagine that it does, then we have to do, not with things in themselves, but only with our mental pictures of things. Now if naïve realism, when consistently thought out, leads to results which directly contradict its presuppositions, then these presuppositions must be discarded as unsuitable for the foundation of a universal philosophy. In any case, it is not permissible to reject the presuppositions and yet accept the consequences, as the critical idealist does when he bases his assertion that the world is my mental picture on the line of argument already described. (Eduard von Hartmann gives a full account of this line of argument in his work, Das Grundproblem der Erkenntnistheorie.)

[2] The truth of critical idealism is one thing, the force of its proof another. How it stands with the former will appear later on in the course of this book, but the force of its proof is exactly nil. If one builds a house, and the ground floor collapses while the first floor is being built, then the first floor collapses also. Naïve realism and critical idealism is related as ground floor to the first floor in this simile.

[3] For someone who believes that the whole perceived world is only an imagined one, a mental picture, and is in fact the effect upon my soul of things unknown to me, the real problem of knowledge is naturally concerned not with the mental pictures present only in the soul but with the things which are independent of us and which lie outside our consciousness. He asks: How much can we learn about these things indirectly, seeing that we cannot observe them directly? From this point of view, he is concerned not with the inner connection of his conscious percepts with one another but with their causes which transcend his consciousness and exist independently of him, since the percepts, in his opinion, disappear as soon as he turns his senses away from things. Our consciousness, on this view, works like a mirror from which the pictures of definite things disappear the moment its reflecting surface is not turned toward them. If, now, we do not see the things themselves but only their reflections, then we must learn indirectly about the nature of things by drawing conclusions from the behavior of the reflections. Modern science takes this attitude in that it uses percepts only as a last resort in obtaining information about the processes of matter which lie behind them, and which alone really "are". If the philosopher, as critical idealist, admits real existence at all, then his search for knowledge through the medium of mental pictures is directed solely toward this existence. His interest skips over the subjective world of mental pictures and goes straight for what produces these pictures.

[4] The critical idealist can, however, go even further and say: I am confined to the world of my mental pictures and escape from it. If I think of a thing as being behind my mental picture, then thought is again nothing but a mental picture. An idealist of this type will either deny the thing-in-itself entirely or at any rate assert that it has no significance for human beings, in other words, that it is as good as non-existent since we can know nothing of it.

[5] To this kind of critical idealist the whole world seems a dream, in the face of which all striving for knowledge is simply meaningless. For him there can be only two sorts of men: victims of the illusion that their own dream structures are real things, and the wise ones who see through the nothingness of this dream world and who must therefore gradually lose all desire to trouble themselves further about it. From this point of view, even one's own personality may become a mere dream phantom. Just as during sleep there appears among my dream images an image of myself, so in waking consciousness the mental picture of my own I is added to the mental picture of the outer world. We have then given to us in consciousness, not our real I, but only our mental picture of our I. Whoever denies that things exist, or at least that we can know anything of them, must also deny the existence, or at least the knowledge, of one's own personality. The critical idealist then comes to the conclusion that "All reality resolves itself into a wonderful dream, without a life which is dreamed about, and without a spirit which is having the dream; into a dream which hangs together in a dream of itself."

[6] For the person who believes that he recognizes our immediate life to be a dream, it is immaterial whether he postulates nothing more behind this dream or whether he relates his mental pictures to actual things. In both cases life must lose all academic interest for him. But whereas all learning must be meaningless for those who believe that the whole of the accessible universe is exhausted in dreams, yet for others who feel entitled to argue from mental pictures to things, learning will consist in the investigation of these "things-in-themselves." The first of these theories may be called absolute illusionism, the second is called transcendental realism by its most rigorously logical exponent, Eduard von Hartmann.

[7] Both these points of views have this in common with naïve realism, that they seek to gain a footing in the world by means of an investigation of perceptions. Within this sphere, however, they are unable to find a firm foundation.