What one has meant to do during the day, as it turns out, sleep intervening, one accomplishes only in one’s dreams, that is to say after it has been distorted by sleep into following another line than one would have chosen when awake. The same story branches off and has a different ending. When all is said, the world in which we live when we are asleep is so different that people who have difficulty in going to sleep seek first of all to escape from the waking world. After having desperately, for hours on end, with shut eyes, revolved in their minds thoughts similar to those which they would have had with their eyes open, they take heart again on noticing that the last minute has been crawling under the weight of an argument in formal contradiction of the laws of thought, and their realisation of this, and the brief “absence” to which it points, indicate that the door is now open through which they will perhaps be able, presently, to escape from the perception of the real, to advance to a resting-place more or less remote on the other side, which will mean their having a more or less “good” night.