He is to look for no support elsewhere and no light. Evidently the passage to such a unique position may frighten some aspirants to such a degree that they refuse to traverse it. This is not an ordinary kind of courage which is required here. All that ties him to his nature as a human being, to his very existence, must be let go. Nothing less than annihilation seems to confront him. Indeed, afterwards, when the experience is over, he thinks to himself that it was really "a kind of dying." He had been swallowed by death but disgorged again later. He had slipped into it so imperceptibly, so unconsciously, and so suddenly, that all this became known only after it was over.
-- Notebooks Category 23: Advanced Contemplation > Chapter 8: The Void As Contemplative Experience > # 42