Celtic mythology often speaks of otherworldly realms that blur boundaries between life and death. Rituals celebrated cycles of death and rebirth emphasize the nebulous essence of existence. [Celtic] The inability to clearly define certain aspects of being reflects the belief in interdependence with nature.

Buddhism teaches that the self is an illusion, and understanding this leads to enlightenment. Meditative practices cultivate the realization of non-self. [Buddhist] The illusory nature of reality is central to Buddhist philosophy.

Jung's theories about the archetypes and the collective unconscious illustrate the nebulous qualities of the psyche. Exploration of dreams and symbols reveals hidden dimensions of self. This highlights the multifaceted nature of identity.