Back of all else lay his native endowments of body and of mind. Physically he was exceptionally free from both inherited and acquired weaknesses. In a letter which he wrote to his near relatives in this country on the occasion of his seventieth birthday, he said, “I have not only lived, but I have enjoyed an exceptional measure of health.” At no period was he laid aside by protracted sickness. At the same time, this must not be understood to signify that he had one of those iron constitutions that seem to be capable of enduring without harm every sort of exposure except such as in its nature must be mortal. In that part of his Journal covering portions of his college and seminary work he often tells of a lassitude for which he blames himself as morally at fault, but in which a physician would have seen symptoms of a low bodily tone. Bad food, lack of exercise and ill treatment on the voyage which first brought him to China left him with a temporary attack of dyspepsia. Occasionally he had dysentery, and once he had erysipelas. At no time did he regard himself as so rugged in constitution that he did not need to provide himself with proper clothing and shelter, so far as practicable. Nevertheless it was because of the sound physique inherited from his parents, and fostered by his country life during early youth, that without any serious breaking down of health or strength he was able to endure the privations and the toils and cares of his forty-five years in China. As to his native mental endowments, no one would have been more ready than he to deny that he was a “genius,” if by this is meant that he had an ability offhand to do important things for the accomplishment of which others require study and effort. If, as to this, any exception ought to be made in his favor, it would be concerning some of the applied sciences and machinery, and possibly mathematics. He certainly had an extraordinary aptitude especially as to the former of these. While he himself regarded his work in the Mandarin as perhaps the greatest of his achievements, he had no such talent for the mastery of foreign languages that he did not need time and toil and patience to learn them. In college his best standing was not in Latin or Greek. In China other missionaries have been able to preach in the native tongue after as short a period of preparation; and the perfect command of the language which he attained came only after years of ceaseless toil. Such were his native physical and mental endowments: a good, sound, though not unusually rugged, bodily constitution; and an intellect vigorous in all of its faculties, which was in degree not so superior as to set him on a pedestal by himself, yet was very considerably above the average even of college students. Concerning the qualities of his heart and of his will it is best to wait and speak later in this volume.