In his view, which is informed by his psychoanalytic training, the ego is a mental construct that performs certain functions on behalf of the self. Chief among these are maintaining the boundary between the conscious and the unconscious realms of the mind and the boundary between self and other, or subject and object. It is only when these boundaries fade or disappear, as they seem to do under the influence of psychedelics, that we can “let go of rigid patterns of thought, allowing us to perceive new meanings with less fear.”
