At this point I refer you to a picture by Schwind, from the Schack Gallery in Munich, so that you may see how rightly the artist has conceived the origin of a dream from a dominating situation. It is the _Dream of a Prisoner_,[29] which can have no other subject than his release. It is a very neat stroke that the release should be effected through the window, for the ray of light that awakens the prisoner comes through the same window. The gnomes standing one above the other probably represent the successive positions which he himself had to take in climbing to the height of the window, and I do not think I am mistaken or that I attribute too much preconcerted design to the artist, by noting that the uppermost of the gnomes, who is filing the grating (and so does what the prisoner would like to do) has the features of the prisoner. In all other dreams except those of children and those of the infantile type, distortion, as we have said, blocks our way. At the outset we cannot ascertain whether they are also wish fulfillments, as we suspect; from their manifest content we cannot determine from what psychic stimulus they derive their origin, and we cannot prove that they also are occupied in doing away with the stimulus and in satisfying it. They must probably be interpreted, that is, translated; their distortion must be annulled; their manifest content replaced by their latent thought before we can judge whether what we have found in children's dreams may claim a universal application for all dreams. NINTH LECTURE THE DREAM _The Dream Censor_ We have learned to know the origin, nature and function of the dream from the study of children's dreams. _Dreams are the removal of sleep-disturbing psychic stimuli by way of hallucinated satisfaction._ Of adults' dreams, to be sure, we could explain only one group, what we characterized as dreams of an infantile type. As to the others we know nothing as yet, nor do we understand them. For the present, however, we have obtained a result whose significance we do not wish to under-estimate. Every time a dream is completely comprehensible to us, it proves to be an hallucinated wish-fulfillment. This coincidence cannot be accidental, nor is it an unimportant matter. We conclude, on the basis of various considerations and by analogy to the conception of mistakes, that another type of dream is a distorted substitute for an unknown content and that it must first be led back to that content. Our next task is the investigation and the understanding of this dream distortion.