On Theology and Psychology

On Theology and Psychology is a welcome addition to the Philemon Foundation Series which is committed to making available the unpublished works of the Swiss psychologist C. G. Jung (1875–1961). The C. G. Jung Papers Collection, housed at the Swiss Federal Institute of Technology in Zürich, contains tens of thousands of pages of manuscripts, seminars, and correspondence waiting to be published. The historical, clinical, and cultural significance of these materials equals the importance of what has already appeared in the twenty-volume Collected Works of C. G. Jung (published by Princeton University Press). Of the nearly 35,000 letters in the Papers Collection, only a fraction has been published. Throughout his life, Jung corresponded with psychologists, psychiatrists, political leaders, educators, scientists, social reformers, artists, novelists, and many pastors and theologians, both Protestant and Catholic. Jung’s correspondence with Reformed pastor, theologian, and pioneer of the ecumenical movement, Adolf Keller (1872– 1963), stands out from the others and is worthy of special attention. In a friendship (often strained) stretching over fifty years, we see the sustained influence that Keller had on Jung’s life and thought, as well as Jung’s influence upon and commitment to Protestantism and the ministry of the Church. Now, for the first time in English, On Theology and Psychology brings together the entire Jung–Keller correspondence in one volume, providing a fascinating window into the contours of their friendship and glimpses into their respective psyches. We witness Jung’s candid, profoundly appreciative, and, at times, frustrated engagement