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The Discovery of the Unconscious by Henri F. Ellenberger has become a common topic in the historiography of (dynamic) psychiatry. But many users of this term have still the opinion that Sigmund Freud was the unique discoverer. In reality there was a scientific context at the fin de siècle, which corresponded intensively with Freud's original concepts and formed their implications (e.g. Darwinism, Neurophysiology). Besides well-documented synchronic analogies Freud implanted diachronic traditions within his psychoanalytic theory. Especially, his main work The Interpretation of Dreams implied Greek mythology as well as natural philosophy of romanticism. Freuds special concepts like 'transfer' and 'resistance' have to be analysed as historical metaphors.