The circumstance which calls forth this criticism is essentially related to the effect of displacement, which you have learnt to know as the most powerful instrument in the service of the dream-censorship. With its aid the substitute-formations which we call allusions are created; but these allusions are of a kind not easy to recognize as such; nor is it easy to discover the thought proper by working back from them, for they are connected with it by the most extraordinary and unusual extrinsic associations. But the whole matter throughout concerns things which are meant to be hidden, intended to be concealed: that is exactly the object of the dream-censorship. We must not expect, though, to find something that has been hidden by looking in the very place where it ordinarily belongs. The frontier surveillance authorities nowadays are a good deal more cunning in this respect than the Swiss school authorities; for they are not content with examining portfolios and letter-cases when hunting for documents and plans; but consider the possibility that spies and smugglers may conceal anything compromising about their persons, in places where it is most difficult to detect and where such things certainly do not belong, for example, between the double soles of their boots. If the concealed articles are found there, it is certainly true that they have been “dragged” to light, but they are none the less a very good “find.” In admitting the possibility that the connection between a latent dream-element and its manifest substitute may appear most remote and extraordinary, sometimes even comical or joking, we are guided by our wide experience of instances in which we did not as a rule find the meaning ourselves. It is often impossible to arrive at such interpretations by our own efforts: no sane person could guess the bridge connecting the two. The dreamer either solves the riddle straightaway by a direct association (_he_ can do it because it is in his mind that the substitute-formation originated); or else he provides so much material that there is no longer any need for special penetration in order to solve it—the solution thrusts itself upon us as inevitable. If the dreamer does not help us in either of these two ways the manifest element in question will remain for ever incomprehensible. Let me give you one more instance of this kind which happened recently. A patient of mine lost her father during the course of the treatment, after which she seized every opportunity to bring him back to life in her dreams. In one of these her father appeared in a certain connection otherwise not applicable and said: “_It is quarter past eleven, it is half past eleven, it is quarter to twelve_.” For the interpretation of this curious detail she could only provide the association that her father was pleased when his older children were punctual at the midday meal. This certainly fitted in with the dream-element, but it threw no light on its origin. The