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 be if real Arabs stood before me and raised their hands at my call. If I ask a crowd of people to whom I speak to change their position so that they may the better hear me I am not astonished at the infinite complexity of the change I bring about, because I realise that the will in each one has mastery over the form by some miracle, and the message runs along nerve and muscle, and the simple wish brings about the complex change. But how do I lay hold of the figures in dream or imagination? By what miracle does the simple wish bring about the complex changes? It may now be seen why I asked for some means by which I might ascertain whether the forms in dream or imagination are two or three dimensional. If they are on the flat, if they are human memories merely, vibrations of stored-up sunlight fixed in some way in the brain as a photograph is fixed, the alteration of these by a simple wish involves incredibilities. I find Freud, referring to a dream he had, saying carelessly that it was made up by a combination of memories, but yet the architecture of the dream seemed to be coherent and not a patchwork. It had motion of its own. Wonderful, indeed, that the wonder