[The question raised by Jacques Barzun in the following article is one which deserves serious consideration by the American Society of Church History and by all who are concerned with the training of church historians. Far too often we assume that simply to do a little research, or a lot, is enough to create an adequate understanding of the church's past. Dr. Barzun, provost of Columbia University, provokes thought and may even help us use our resources more wisely. The Editors.]