Jung’s research for the unconscious is said to have started at the Burghölzli Hospital, where he first developed his theory of the feeling-toned complexes, through the association experiments, which constituted a common method in his time. However, C.G. Jung had an idiosyncratic approach to psychotherapy. Sonu Shamdasani explains that the main point in which Jung distinguished himself from other concurrent psychotherapeutic approaches was by turning to the method of philology. His keen interest in the study of mythology, folklore and religion was intensified with the readings of Friedrich Creuzer’s Symbolik und Mythologie der alten Völker, Albrecht Dietrich’s Eine Mithrasliturgie and the anthropological writings of Lévy-Bruhl, from whom Jung made reference to the idea of the “représentations collectives”.