" If the ego is to attain a condition of tranquillity in which to exercise discrimination, consciousness and the differentiated function must be as far removed as possible from the active field of emotional components. All differentiated functions are liable to be disturbed by them, but the disturbance is most evident in the case of thinking, which is by nature opposed to feeling and even more to emotionality. "

― Erich Neumann , The Origins and History of Consciousness