Adolf von Harnack (1851-1930) is recognized as one of the outstanding church historians of his day. He was professor of church history successively in the universities of Leipzig, Giessen, Marburg, and Berlin. His great work, тАЬA History of DogmaтАЭ, has exerted an important influence upon modern theological study. Other titles translated into English include тАЬA History of the Expansion of ChristianityтАЭ, тАЬThe Apostles CreedтАЭ, and тАЬThe Acts of the ApostlesтАЭ.