Lawrence Durrell's Alexandria Quartet, consisting of four books---Justine (1957), Balthazar (1958), Mountolive (1959), and Clea (1960)---has long been overlooked academic literary criticism and Durrell's works have largely failed to enter Western canon due to their curious and indefinite status within the literary movements of the twentieth century. This thesis locates the Quartet at the historical and ideological confluence of the major literary philosophies of the century---modernism and postmodernism. Durrell's work seems to exhibit modernist techniques, such as anxiety, uncertainty and the lack of an authoritative viewpoint, as well as themes of human memory, attention to Freudian psychology and a belief in the possibility of salvation through art, but at the same time demonstrates many postmodern features, including metafictional traits, intertextuality, and pastiche, in addition to elements of Lacanian psychoanalytic theory. The Alexandria Quartet thus serves as an important transitional work in twentieth century literature.