7. Manifestations of the Unconscious

But dreams can also be due to inner stimuli, and again it is not the stimuli as such which appear, but the sense-image which has been transformed, cast into symbolism, by the soul. For example, someone dreams of a very hot stove; he wakes up with his heart thumping. Dreams of flying which occur very frequently, are due, as a rule, to some kind of abnormal process taking place in the lungs during sleep. Hundreds of such examples could be quoted and the different categories of dreams enumerated at great length. Although we cannot enter exhaustively into the deeper aspects of sleep, I want still to speak of certain points.