Quote from : The Doors of Perception Book

For Persons are selves and, in one respect at least, I was now a Not- self, simultaneously perceiving and being the Not-self of the things around me. To this new-born Not- self, the behavior, the appearance, the very thought of the self it had momentarily ceased to be, and of other selves, its one-time fellows, seemed not indeed distasteful (for distastefulness was not one of the categories in terms of which I was thinking), but enormously irrelevant.