Two works in one volume revealing the path of individual spiritual development, they are considered the most mystic and poetic of Baha'u'llah's Writings; these two works constitute in some ways the most absorbing and evocative books of His Revelation. In The Seven Valleys Baha'u'llah outlines the seven stages the soul must traverse in its quest for attaining nearness to God and describes the experiences characterizing each stage. In The Four Valleys Baha'u'llah explains the four ways in which the Unseen is seen, the four stages of the human heart, and the four kinds of mystic wayfarers seeking the Intended One.