Book 3, Chapter 4 Morality and Psychoanalysis

Before Lewis delves into more specifics about what constitutes the "Christian life," he explores the relationship between morality and psychoanalysis, both of which claim to "put the human machine right." This leads him to clarifying that Christian morality isn't a reward system for keeping rules but an acknowledgment that every one of our choices contributes to the growth of our central being "either into a creature that is in harmony with God, and with other creatures, and with itself, or else into one that is in a state of war and hatred with God, and with its fellow-creatures, and with itself."