The purpose of this study is to trace the philosophical implication of John Fowles's literary texts to explore the organic link between existential freedom and his writing of The French Lieutenant's Woman. Fowles is dealing here with three kinds of freedom: social, individual and narrative. The author first interprets Fowle's concern of freedom from social support. Then the author is devoted to the study of individual freedom. Finally, the author goes on to argue that narrative freedom is a metaphor for freedom from God, a precondition for existential freedom. Fowles's FLW bears his philosophical assertion that freedom of will is the highest human good.