Now, the dream is a seeking and presenting of reasons for these excitations of feeling, of the supposed reasons, that is to say. Thus, for example, whoever has his feet bound with two threads will probably dream that a pair of serpents are coiled about his feet. This is at first a hypothesis, then a belief with an accompanying imaginative picture and the argument: "these snakes must be the causa of those sensations which I, the sleeper, now have."

So reasons the mind of the sleeper. The conditions precedent, as thus conjectured, become, owing to the excitation of the fancy, present realities. Everyone knows from experience how a dreamer will transform one piercing sound, for example, that of a bell, into another of quite a different nature, say, the report of cannon.

In his dream he becomes aware first of the effects, which he explains by a subsequent hypothesis and becomes persuaded of the purely conjectural nature of the sound. But how comes it that the mind of the dreamer goes so far astray when the same mind, awake, is habitually cautious, careful, and so conservative in its dealings with hypotheses? --Human, All Too Human