The proposition is this: that there is in every human being a creative principle. This principle is not known directly but rather indirectly. We infer such a principle therefore from its manifestations. Marion Milner puts this clearly when talking of how artists depict nature: I began to suspect that they were in fact trying to describe the process of surrendering themselves to the deep spontaneous responses of nature within them, that were stimulated by the contact with nature outside of them. Coherent representation and feeling are partners and the one cannot exist without the other. A feature of the psychotic area of the personality is that there is no sensual representation and therefore no feeling. Representation and feeling both ontogenetically and psychogenetically chart a dramatic development in the human entity. Psychogenetically it is as significant as the beginning of bipedalism in the process of hominisation.