Confronted by the full meaning of mentalism, we are startled into discoveries of the highest importance. The world becomes a deception of the mind, its reality no longer a certainty. But the corollary is that the deception can be stopped, the truth revealed, the authentic reality recovered. This requires the corrective work first of the Quest and finally of the mentalistic techniques.
-- Notebooks Category 21: Mentalism > Chapter 5: The Key To the Spiritual World > # 23