St Augustine's pneumatology remains one of his most distinctive, decisive, and ultimately divisive contributions to the story of Christian thought. How did his understanding of the Spirit develop? Why does he identity the Spirit with divine love and cosmic order? And from what personal and literary sources did he receive inspiration? This examination of Augustine's pneumatology - the first book-length study of this important topic available - seeks answers in Augustine's earliest extant writings, penned during the years surrounding his famed return to the Catholic Church and the height of his...