The Essentials of Spirituality is a great reference book on the subject of spirituality by the great American professor/author Felix Adler. This religious classic contains this passage: "The first essential is an awakening, a sense of the absence of spirituality, the realized need of giving to our lives a new and higher quality; first there must be the hunger before there can be the satisfaction." Felix Adler (August 13, 1851 - April 24, 1933) was a German American professor of political and social ethics, rationalist, influential lecturer, religious leader and social reformer who founded the Ethical Culture movement