In the Confessions and the Letters, moreover, the Manichæans figure prominently. The treatises included in the present series may be said to fairly represent Augustin’s manner of dealing with Manichæism. The Anti-Manichæan writings are found chiefly in vol. VIII. of the Benedictine edition, and in volumes I. and XI. of the Migne reprint. Augustin’s personal connection with the sect extending over a period of nine years, and his consummate ability in dealing with this form of error, together with the fact that he quotes largely from Manichæan literature, render his works the highest authority for Manichæism as it existed in the West at the close of the fifth century.] Comp. also the Acts of Councils against the Manichæans from the fourth century onwards, in Mansi and Hefele [and Hardouin].