For a long time, I used to go to bed early. Sometimes, when I had put out my light, my eyes would close so quickly that I had not even time to say to myself: "I'm falling asleep." And half an hour later the thought that it was time to go to sleep would awaken me; I would make as if to put away the book which I imagined was still in my hands, and to turn out the light; I had gone on thinking, while I was asleep, about what I had just been reading, but these thoughts had taken a rather peculiar turn; it seemed to me that I myself was the immediate subject of my book. This impression would persist for some moments after I awoke; it did not offend my reason, but lay like scales upon my eyes and prevented them from registering the fact that the light was no longer on.