Rumi is the greatest mystic poet to have written in Persian, and the Masnavi is his masterpiece. Divided into six books and consisting of some 26,000 verses, the poem was designed to convey a message of divine love and unity to the disciples of Rumi's Sufi order, known today as the Whirling Dervishes. Like the earlier books, Book Four interweaves amusing stories with homilies to instruct pupils in understanding of God's meaning. It has a special focus on the mystical knowledge of the spiritual guide, elaborated through stories such as Solomon's inspiration to the Queen of Sheba, and...