History of the Christian Church, Volume I: Apostolic Christianity. A.D. 1-100.
As I appear before the public with a new edition of my Church History, I feel more than ever the difficulty and responsibility of a task which is well worthy to occupy the whole time and strength of a long life, and which carries in it its own rich reward. The true historian of Christianity is yet to come. But short as I have fallen of my own ideal, I have done my best, and shall rejoice if my efforts stimulate others to better and more enduring work.