The Sermons contain hints or anticipations of ideas that were to figure later in his scientific writings, more particularly concerning the polaristic nature of the psyche, of life in general, and of all psychological statements.
Jung's own editorial apparatus identifies the Seven Sermons as the anticipatory matrix of his entire scientific psychology, linking its Gnostic paradox-thinking directly to his mature theory of psychic polarity.
, Memories, Dreams, Reflections, 1963thesis