" It was far more difficult for this educated man to make an admission of this kind than it would have been for a primitive to say that he was plagued by a ghost. The malign influence of evil spirits is at least an admissible hypothesis in a primitive culture, but it is a shattering experience for a civilized person to admit that his troubles are nothing more than a foolish prank of the imagination. The primitive phenomenon of obsession has not vanished; it is the same as ever. It is only interpreted in a different and more obnoxious way. "

― C.G. Jung , Man and His Symbols