Freud's The Future of an Illusion was not just an abstract statement of his position on religion, but part of an ongoing exchange of views with Oskar Pfister, a Zurich pastor. Freud was continuing to try to settle differences between himself and Jung. Pfister, while practising as an analyst in 1928, wrote a respectful reply to Freud, and his 'The Illusion of a Future' has never before appeared in English. Pfister was expressing what he saw as the central weaknesses in Freud's attitude toward ethics, art, philosophy, and the practice of psychotherapy.