Merton and Arasteh trade books and essays. They discuss psychology, Sufism, Zen, Chuang Tzu, mysticism, Rumi, psychedelic drugs, etc. There are also letters by William H. Shannon who was approaching Arasteh about using his letters in «The Hidden Ground of Love», and other letters dealing with permissions to use articles or chapters for a Merton memorial publication.

Content described at the Subseries level.