First published in 1924, this volume contains the Donnellan lectures given by Francis Crawford Burkitt (1864 1935) at Trinity College Dublin in June 1923. Their subject is Manichaeism, a dualistic form of Christianity that thrived during the fourth and fifth centuries in Central Asia. Burkitt focuses especially on the discovery of fragments of Manichaean literary texts in Chinese Turkestan, near the Siberian border, early in the twentieth century. The first lecture introduces the history of the Manichees and reviews the sources of information available about them. The second discusses the...