If by meditation you mean mere absorption within oneself, withdrawal from the world of the senses and contact with some inner world, this need not necessarily be a holy state, but could be an unholy one and a communion taking place therein could be demonic rather than divine. There are various ways of achieving this deep absorption which to an outward observer may seem to be a kind of trance and these ways include drugs, witchcraft, and black magic, just as they also include religion, spiritual devotion, and aspiration. This difference must be clearly understood. This distinction is both ethical and mystical. Too many half-crazy, mixed-up persons who refuse to acknowledge it have fallen into a spurious mysticism that leads to their downfall and destruction.
-- Notebooks Category 4: Elementary Meditation > Chapter 1 : Preparatory > # 484
