This course covers modern approaches to the Orthodox concept of theosis, the movement of the Christian into complete life in, through, and with God, through Christ and the Holy Spirit. The course focuses in particular on the leading Orthodox spiritual personalities, movements and writings of the nineteenth and twentieth centuries. The writings include works of contemplation, monastic and non-monastic texts, sermons and catecheses. Classroom and online students will be evaluated on the basis of participation and presentations of texts, a review of a modern work of Orthodox spirituality, and a research essay.