Like the paranoid schizophrenic, the vatic personality pretends to be talking about the grandiose outside cosmic world, but he is really talking grandiosely in symbolic ways only about his narcissistic self and his inner world. The mystic pretends to discard his sensory self in order to meld with the cosmic Self; but in discarding his senses he abjures his only connection with the cosmos and re-encounters only himself. The realities he expounds are inside him.

p. 265 - Hallucinogens and the Shamanic Origins of Religion (1972)