By freeing himself largely of attachments--and especially the subtlest yet largest of all, attachment to the ego--his heart is emptied. Into the void thus created, Grace can flow. Mystics who complain of the soul's dark night are led to know that it is a process whereby this space in the heart is being increased, a crushing of self into dust, to make room for Grace. If they are thus led to nothingness, let them remember that the Overself is no-thing.
-- Notebooks Category 23: Advanced Contemplation > Chapter 3: The Dark Night of The Soul > # 57