Sincerity is the basis of such power. At heart we worship the man who will not lie; who will not use conventions or formulas in which he does not believe; who does not give us a second-hand view of either life or God; who does not play with our conscience because it is not politic to be too direct; who does not juggle with our doubts, nor ignore our hopes and powers; who also frankly acknowledges that he, too, is a man. A call to the ministry also involves an over-mastering spiritual desire. Tell me what a man wants, and I will tell what he is, and what he can best do. If a man desires above all things to conduit a great business, he is by nature qualified for trade; if he desires knowledge, he is designed for a scholar; if he is always observing form, rhyme, aesthetic beauty, and striving to produce verse, he is a born poet. But if the one thing that rules his dreams is the longing for spiritual power--the thought of impressing God upon his generation, and leading men to a clearer view of life and duty--he is a born minister of the Spirit, and to the spirit of the sons of men. Along with this goes the great burden: "Woe is me, if I preach not the Gospel!" Wherever, to-day, there is a young man in whose heart is stirring a great devotional dream for the race, who longs to project his life into the most enduring and far-reaching influence, who craves the exercise of great gifts and powers, there is a man whose heart God is calling to possibilities such as no one can measure, and to triumphs such as no one can forecast! The highest triumphs of these coming years are to be spiritual. The leader is to be the one who can carry the deepest spiritual inspiration to the hearts of his fellow-men. Do not let the hour go by! This day of vision is the prophetic day! But if the call be answered, if certain high-spirited and noble-minded men ask thus to stand as spiritual ministrants to the souls of men, how shall they be trained for the high office? The old way will not do. Sweeping changes, in these last days, have come over the commercial, academic, and social world. We do not go back to the hand-loom, the hand-sickle, the hand-press. What is true of these aspects of life is true of the spiritual training. It must be larger, freer, grander, than before. Time was when a theologian, it was thought, must be separated from the world--an ascetic working in the dim half-light of the old library, or scriptorium, or hall. To-day, he must gain much of his training from the great life of the world--learn how to meet men and occasions, and be prepared to deal with modern forces and energies with courage, knowledge, and decision. We read of the earnest Thomas Goodwin: his favorite authors were such as Augustine, Calvin, Musculus, Zanchius, Paraeus, Walaeus, Gomarus, and Amesius. What Doctor of Theology takes the last six of these to bed with him to-day?