The theft of the apple in our example is a typical theme of dreams, often recurring with various modifications. It is also a well-known theme in mythology, and is found not only in the story of the Garden of Eden, but in numerous myths and fables of all ages and climes. It is one of those universally human symbols, which can reappear in any one, at any time. Thus, dream psychology opens up a way to a general comparative psychology, from which we hope to attain the same sort of understanding of the development and structure of the human soul, as comparative anatomy has given us concerning the human body. FOOTNOTES: [Footnote 192: This lecture was prepared for the Berne Medical Congress, 1914, postponed on the outbreak of war. Translator, Dora Hecht.] [Footnote 193: "The Psychology of the Unconscious" ("Wandlungen und Symbole der Libido"). Moffat, Yard & Co.] CHAPTER XIII THE CONTENT OF THE PSYCHOSES[194] INTRODUCTION My short sketch on the Content of the Psychoses which first appeared in the series of "Schriften zur Angewandten Seelenkunde" under Freud's editorship was designed to give the non-professional but interested public some insight into the psychological point of view of recent psychiatry. I chose by way of example a case of the mental disorder known as Dementia Præcox, which Bleuler calls Schizophrenia. Statistically this extensive group contains by far the largest number of cases of psychosis. Many psychiatrists would prefer to limit it, and accordingly make use of other nomenclature and classification. From the psychological standpoint the change of name is unimportant, for it is of less value to know what a thing is called than to know what it is. The cases of mental disorder sketched in this essay belong to well-known and frequently occurring types, familiar to the alienist. The facts will not be altered if these disorders are called by some other name than dementia præcox.