To form such conclusions is the aim I have put before myself in this essay. Even if the results are not decisive, the inquiry may lead us to a view of the graphic arts that will not be altogether unfruitful.
I must begin with some elementary psychology, with a consideration of the nature of instincts. A great many objects in the world, when presented to our senses, put in motion a complex nervous machinery, which ends in some instinctive appropriate action. We see a wild bull in a field; quite without our conscious interference a nervous process goes on, which, unless we interfere forcibly, ends in the appropriate reaction of flight. The nervous mechanism which results in flight causes a certain state of consciousness, which we call the emotion of fear. The whole of animal life, and a great part of human life, is made up of these instinctive reactions to sensible objects, and their accompanying emotions. But man has the peculiar faculty of calling up again in his mind the echo of past experiences of this kind, of going over it again, “in imagination” as we say. He has, therefore, the possibility of a double life; one the actual life, the other the imaginative life. Between these two lives there is this great distinction, that in the actual life the processes of natural selection have brought it about that the instinctive reaction, such, for instance, as flight from danger, shall be the important part of the whole process, and it is towards this that the man bends his whole conscious endeavour. But in the imaginative life no such action is necessary, and, therefore, the whole consciousness may be focussed upon the perceptive and the emotional aspects of the experience. In this way we get, in the imaginative life, a different set of values, and a different kind of perception.
We can get a curious side glimpse of the nature of this imaginative life from the cinematograph. This resembles actual life in almost every respect, except that what the psychologists call the conative part of our reaction to sensations, that is to say, the appropriate resultant action is cut off. If, in a cinematograph, we see a runaway horse and cart, we do not have to think either of getting out of the way or heroically interposing ourselves. The result is that in the first place we _see_ the event much more clearly; see a number of quite interesting but irrelevant things, which in real life could not struggle into our consciousness, bent, as it would be, entirely upon the problem of our appropriate reaction. I remember seeing in a cinematograph the arrival of a train at a foreign station and the people descending from the carriages; there was no platform, and to my intense surprise I saw several people turn right round after reaching the ground, as though to orientate themselves; an almost ridiculous performance, which I had never noticed in all the many hundred occasions on which such a scene had passed before my eyes in real life. The fact being that at a station one is never really a spectator of events, but an actor engaged in the drama of luggage or prospective seats, and one actually sees only so much as may help to the appropriate action.