But, though so great a genius, he laid great stress on sound and thorough learning and study. "The strength and glory of a town," said he, "does not depend on its wealth, its walls, its great mansions, its powerful armaments, but in the number of its learned, serious, kind, and well-educated citizens." He was himself a great scholar, far beyond what we would suspect in so perturbed a life, or what he cared to parade in his writings. He mastered the ancient languages, and insisted on the perpetual study of them as "the scabbard which holds the sword of the Spirit, the cases which enclose the precious jewels, the vessels which contain the old wine, the baskets which carry the loaves and the fishes for the feeding of the multitude." His associates say of him that he was a great reader, eagerly perusing the Church Fathers, old and new, and all histories, well retaining what he read, and using the same with great skill as occasion called. Melanchthon, who knew him well, and knew well how to judge of men's powers and attainments, said of him: "He is too great, too wonderful, for me to describe. Whatever he writes, whatever he utters, goes to the soul and fixes itself like arrows in the heart. _He is a miracle among men._" Nor was he without the humility of true greatness. Newton's comparison of himself to a child gathering shells and pebbles on the shore, while the great ocean of truth lay all undiscovered before him, has been much cited and lauded as an illustration of the modesty of true science. But long before Newton had Luther said of himself, in the midst of his mighty achievements, "Only a little of the first fruits of wisdom--only a few fragments of the boundless heights, breadths, and depths of truth--have I been able to gather." He was a man of amazing _faith_--that mighty principle which looks at things invisible, joins the soul to divine Omnipotence, and launches out unfalteringly upon eternal realities, and which is ever the chief factor in all God's heroes of every age. He dwelt in constant nearness and communion with the Eternal Spirit, which reigns in the heavens and raises the willing and obedient into blessed instruments of itself for the actualizing of ends and ideals beyond and above the common course of things. With his feet ever planted on the promises, he could lay his hands upon the Throne, and thus was lifted into a sublimity of energy, endurance, and command which made him one of the phenomenal wonders of humanity. He was a very Samson in spiritual vigor, and another Hannah's son in the strength and victory of his prayers.