A student ought, while at college, to make himself master of at least one or two of the great books of the Christian centuries in which Christianity is exhibited as a whole by a master mind. If I may be allowed to mention my own experience, it happened to me, more by chance, perhaps, than wise choice, to master, when I was a student, three such books. One was Owen's work on _The Holy Spirit_, another Weiss' _New Testament Theology_, and the third Conybeare and Howson's _Life and Epistles of St. Paul_. Each of these may be said, in its own way, to exhibit Christianity entire, and I learned them almost by heart, as one does a text-book. I was not then thinking much of subsequent benefit; but I can say, that each of them has ever since been a quarry out of which I have dug, and probably I have hardly ever preached a sermon which has not exhibited traces of their influence. There is another valuable result which will follow from the early mastery of books of this kind. You will be laying the foundation of the habit of what may be called Great Reading, by which I mean the systematic study of great theological works in addition to the special reading for the work of each Sunday. Week by week a conscientious minister has to do an immense amount of miscellaneous reading in commentaries, dictionaries, etc., in connection with the discourses in hand; but, in addition to this, he should be enriching the subsoil of his mind by larger efforts in wider fields. It is far from easy to carry this on in a busy pastorate; and it is almost impossible unless the foundation has been laid at college.[65] One more hint I should like to give: it is a reminiscence from a casual lecture which I listened to when a student and profited by. Besides attending to theological studies in general, one ought to have a specialty. The minister, and even the student before he leaves college, should be spoken of as the man who knows this or that. Perhaps the best specialty to choose is some subject which is just coming into notice, such as, at present, Comparative Religion, or Christian Ethics, or, best of all, Biblical Theology. Such a specialty, early taken up, is like a well dug on one's property, which year by year becomes deeper. All the little streams and rivulets of reading and experience find their way into it; and almost unawares the happy possessor comes to have within himself a fountain which makes it impossible that his mind should ever run dry. * * * * * Of course I cannot attempt to give here even the slightest sketch of the doctrinal system of St. Paul; but there are two characteristics of it which I should like to mention in closing, as they are essential to the right management of the element of preaching with which I have occupied you to-day.