This title completes a series of books which introduce the reader to the path of unfoldment through meditation and practical service in the world, or through the service of healing. It gives a deep inner meaning to the ordinary experiences which the soul meets once it has embarked on its quest, experiences which prepare it for ever greater spiritual service through putting into practice the ideal of brotherhood. "Spiritual Unfoldment 4" describes the expansion of consciousness which comes through spiritual initiation, how the dual aspects of the soul are balanced as the soul gains wisdom and mastery over the motions; and, it gives a glimpse of the wonderful opportunities which may be given to any soul as it opens itself to the light.