Johannes Tauler is one of the four outstanding figures in the amazing flowering of mystical experience and writing that took place in late-medieval Germany. This phenomenon included the unlettered Beguine Mechthild of Magdeburg and Tauler's fellow Dominicans Meister Eckhart and Heinrich Seuse. Tauler's sermons, written only in German, circulated widely in the Middle Ages in Germany and the Low Countries. Since Martin Luther made marginal notes on his copy of the 1508 Augsburg edition of Tauler's sermons and obviously valued him highly, Tauler's works were later read by Protestants as well as by Catholics. Tauler was less erudite and more practical than Eckhart, and his teaching was built on the devotional habits of his day. As a result he was able to transmit much of Eckhart's basic teachings when Eckhart himself was branded as heretical. Some of Eckhart's sermons were preserved under Tauler's name and found their way into...