great amount, in books of psychology and of psycho-analysis. Did I not frequently dream of some friend, or relation, or that I was at school? I found, however, when I studied my dreams, as I was directed in a dialogue, that the image seen was never really that of friend, or relation, or my old school, though it might very closely resemble it. A substitution had taken place, often a very strange one, though I forgot this if I did not notice it at once on waking. The name of some friend, or the conceptions “my father” and “at school,” are a part of the abstract memory and therefore of the dream life, but the image of my father, or my friend, or my old school, being a part of the personal concrete memory appeared neither in sleep nor in visions between sleep and waking. I found sometimes that my father, or my friend, had been represented in sleep by a stool or a chair, and I concluded that it was the entire absence of my personal concrete memory that enabled me to accept such images without surprise. Was it not perhaps this very absence that constituted sleep? Would I perhaps awake if a single concrete image from my memory came before me? Even these images—stool, chair, etc. were never any particular stool, chair, etc. that I had known. Were these images, however, from the buried memory? had they floated up from the subconscious? had I seen them
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