While on a visit to Harvard, I was invited by Agassiz to pass a day with him at Nahant in order to discuss methods and men. He entered into the matter very earnestly, agreed to give us an extended course of lectures, which he afterward did, and aided us in many ways. One remark of his surprised me. I had asked him to name men, and he had taken much pains to do so, when suddenly he turned to me abruptly and said: ``Who is to be your professor of moral philosophy? That is by far the most important matter in your whole organization.'' It seemed strange that one who had been honored by the whole world as probably the foremost man in natural science then living, and who had been denounced by many exceedingly orthodox people as an enemy of religion, should take this view of the new faculty, but it showed how deeply and sincerely religious he was. I soon reassured him on the point he had raised, and then went on with the discussion of scientific men, methods, and equipments. I was also asked by the poet Longfellow to pass a day with him at his beautiful Nahant cottage in order to discuss certain candidates and methods in literature. Nothing could be more delightful than his talk as we sat together on the veranda looking out over the sea, with the gilded dome of the State House, which he pointed out to me as ``The Hub,'' in the dim distance. One question of his amused me much. We were discussing certain recent events in which Mr. Horace Greeley had played an important part, and after alluding to Mr. Greeley's course during the War, he turned his eyes fully but mildly upon me and said slowly and solemnly: ``Mr. White, don't you think Mr. Greeley a very useless sort of man?'' The question struck me at first as exceedingly comical; for, I thought, ``Imagine Mr. Greeley, who thinks himself, and with reason, a useful man if there ever was one, and whose whole life has been devoted to what he has thought of the highest and most direct use to his fellow-men, hearing this question put in a dreamy way by a poet,--a writer of verse,--probably the last man in America whom Mr. Greeley would consider `useful.' '' But my old admiration for the great editor came back in a strong tide, and if I was ever eloquent it was in showing Mr. Longfellow how great, how real, how sincere, and in the highest degree how useful Mr. Greeley had been.