Benedict Guevin, in Christian Anthropology and Sexual Ethics, presents a Catholic Christian understanding of the person. Based specifically on the area of sexuality, Guevin suggests that one cannot understand human sexuality apart from a Christian theological anthropology. He examines the role of Natural Law and Liturgy in forming the virtue of chastity. He presents the positive orientation of the Church's sexual ethics; positive, because it is based on an anthropology which is, itself, positive: both with respect to its origin in the Blessed Trinity and with respect to its end which is the eternal vision of God.