Book Excerpt: ...dered me good service in the investigation of phobias, obsessions, illusions, and the like, and which, under the name "psycho-analysis," had found acceptance by a whole school of investigators. The manifold analogies of dream life with the most diverse conditions of psychical disease in the waking state have been rightly insisted upon by a number of medical observers. It seemed, therefore, a priori, hopeful to apply to the interpretation of dreams methods of investigation which had been tested in psychopathological processes. Obsessions and those peculiar sensations of haunting dread remain as strange to normal consciousness as do dreams to our waking consciousness; their origin is as unknown to consciousness as is that of dreams. It was practical ends that impelled us, in these diseases, to fathom their origin and formation. Experience had shown us that a cure and a consequent mastery of the obsessing ideas did result when once those thoughts, the connecting links between the morbid ideas and the re...