All that he knows and experiences are things in this world of the five senses. The Overself is not within their sphere of operation and therefore not to be known and experienced in the same way. This is why the first real entry into it must necessarily be an entry into no-thing-ness. The mystical phenomena and mystical raptures happen merely on the journey to this void.
-- Notebooks Category 23: Advanced Contemplation > Chapter 8: The Void As Contemplative Experience > # 1
-- Perspectives > Chapter 23: Advanced Contemplation > # 69