With these helps our author sat down to his work. We may suppose him addressing to the saints, whose lives he was about to write, a prayer similar to the beautiful prayer addressed to them by Bollandus at the end of his general preface, and which may be thus abridged: "Hail, ye citizens of heaven! courageous warriors! triumphant over the world! from the blessed scenes of your everlasting glory, look on a low mortal, who searches everywhere for the memorials of your virtues and triumphs. Show your favor to him; give him to discover the valuable monuments of former times; to distinguish the spurious from the legitimate; to digest his work in proper order and method; to explain and illustrate whatever is obscure. Take under your protection all who have patronized or assisted him in his undertakings: obtain for all who read his work, that they imitate the examples of virtue which it places before their eyes; and that they experience how sweet, how useful, and how glorious it is to walk in your steps." In the preface to the French translation, the work is said to have cost our author the labor of thirty years. It was his practice, when he began to write the life of any saint, to read over and digest the whole of his materials, before he committed any thing to paper. His work evidently shows, that his mind was full of its subject, {030} and that what he wrote was the result of much previous information and reflection. On many occasions he must have written on subjects which were new to him; but, such is the mutual connection and dependence of every branch of literature, that a mind stored like his was already in possession of that kind of knowledge, which would make him apprehend, with great ease, whatever he had to learn; and would instruct him, though the subject were new to him, where he might express himself decisively, and where he should doubt. How extensive and profound his general knowledge was, appears from this, that a person who happens to have made any subject, treated of by him, his particular study, will seldom read what our author has written upon it without finding in it something original, or, at least, so happily expressed or illustrated as to have the merit of originality. In some instances, as in his account of the Manichaens, in the life of St. Augustine, and of the crusades, in the life of St. Lewis, he shows such extent and minuteness of investigation, as could only be required from works confined to those subjects. In other instances, where his materials are scanty, so that he writes chiefly from his own mind, as in the lives of St. Zita or St. Isidore of Pelusium, he pours an unpremeditated stream of piety, which nothing but an intimate acquaintance with the best spiritual writers could produce.