"No private thoughts" is one of the guidelines of the Messengers of Peace. This clip from a retreat at the Living Miracles Monastery gives the metaphysics underneath this and how there literally are no private thoughts. The metaphysical understanding of ACIM is necessary as a prerequisite to understanding the metaphysics of "no private thoughts." ACIM uses an educational approach to teach the mind the spiritual metaphysics and the metaphysical definitions that are needed to train the mind to awaken to reality. All of this will be transcended when the meaning of metaphysics is fully grasped and the experience that the . . .