Nor will argument itself be out of place in the hands of laymen mixing with the world. As secular power, influence, or resources are never more suitably placed than when they are in the hands of Catholics, so secular knowledge and secular gifts are then best employed when they minister to Divine Revelation. Theologians inculcate the matter, and determine the details of that Revelation; they view it from within; philosophers view it from without, and this external view may be called the Philosophy of Religion, and the office of delineating it externally is most gracefully performed by laymen. In the first age laymen were most commonly the Apologists. Such were Justin, Tatian, Athenagoras, Aristides, Hermias, Minucius Felix, Arnobius, and Lactantius. In like manner in this age some of the most prominent defences of the Church are from laymen: as De Maistre, Chateaubriand, Nicolas, Montalembert, and others. If laymen may write, lay students may read; they surely may read what their fathers may have written. They might surely study other works too, ancient and modern, written whether by ecclesiastics or laymen, which, although they do contain theology, nevertheless, in their structure and drift, are polemical. Such is Origen’s great work against Celsus; and Tertullian’s Apology; such some of the controversial treatises of Eusebius and Theodoret; or St. Augustine’s City of God; or the tract of Vincentius Lirinensis. And I confess that I should not even object to portions of Bellarmine’s Controversies, or to the work of Suarez on laws, or to Melchior Canus’s treatises on the Loci Theologici. On these questions in detail, however,—which are, I readily acknowledge, very delicate,—opinions may differ, even where the general principle is admitted; but, even if we confine ourselves strictly to the Philosophy, that is, the external contemplation, of Religion, we shall have a range of reading sufficiently wide, and as valuable in its practical application as it is liberal in its character. In it will be included what are commonly called the Evidences; and what is a subject of special interest at this day, the Notes of the Church. * * * * * But I have said enough in general illustration of the rule which I am recommending. One more remark I make, though it is implied in what I have been saying:—Whatever students read in the province of Religion, they read, and would read from the very nature of the case, under the superintendence, and with the explanations, of those who are older and more experienced than themselves. Lecture V. A Form Of Infidelity Of The Day. § 1. Its Sentiments. 1.