The Book of the Lover and the Beloved by the Majorcan lay theologian and philosopher Ramon Llull is one of the most celebrated works of medieval mystical literature. Its 365 paragraphs for daily meditation offer a uniquely expressed and moving testimony to the soul’s quest for union with God. Professor Johnston concisely explains the peculiarities of Llull’s idiosyncratic theological and philosophical system and offers the most comprehensive assessment to date of his debt to the Islamic tradition of devotional discourse. In addition, brief notes help to guide the reader’s appreciation of the spiritual insight that Llull sought to stimulate with his text.