 In western Christianity Dionysius's "via negativa" was particularly influential in the fourteenth and fifteenth centuries, on western mystics such as Marguerite Porete, Meister Eckhart, John Tauler, Jan van Ruusbroec, the author of "The Cloud of Unknowing" (who made an expanded Middle English translation of Dionysius' "Mystical Theology"), Jean Gerson, Nicholas of Cusa, Denys the Carthusian, Julian of Norwich and Harphius Herp.His influence can also be traced in the Spanish Carmelite thought of the sixteenth century among Teresa of Avila and John of the Cross.Symeon the New Theologian (sometimes spelled "Simeon") (; 949–1022 AD) was a Byzantine Christian monk and poet who was the last of three saints canonized by the Eastern Orthodox church and given the title of "Theologian" (along with John the Apostle and Gregory of Nazianzus).