Individuation is "the process whereby a part of a whole becomes progressively more distinct and independent". Individuation plays a critical role in the development of the self and is one of the main archetypes in Jungian analytical psychology and a key to the understanding of the great world religions and philosophies. Jung's concept of the process of individuation and its effect on the individual is a theme that recurs repeatedly in lore, literature, and belief systems. In all its manifestations, the process of individuation can be seen as the central force around which the plot coheres. The final step in the process of individuation is the acquisition of the speaking "bird-of truth". Another case in which individuation seems to be the cardinal theme is Motif H1376.2, "Quest: learning what fear is." Examples of the recurrence of the process of individuation in popular culture can be marshaled in droves.