This landmark guide to modern spirituality is as relevant now as when it was first published in 1975. Featuring an updated text split into three volumes - text, workbook for students & manual for teachers - this thought-...This landmark guide to modern spirituality is as relevant now as when it was first published in 1975. Featuring an updated text split into three volumes - text, workbook for students & manual for teachers - this thought-provoking and informative book includes universal spiritual themes that will help you to achieve dramatic, lasting results in every aspect of your life.