Later in life when Howells resided in Cambridge he had abundant opportunity to become acquainted with Longfellow, whom in _Literary Friends and Acquaintance_ he calls the "White Mr. Longfellow." "He was the most perfectly modest man I ever saw, ever imagined, but he had a gentle dignity which I do not believe any one, the coarsest, the obtusest, could trespass upon. In the years when I began to know him, his long hair and the beautiful beard which mixed with it were of iron-gray, which I saw blanch to a perfect silver, while that pearly tone of his complexion, which Appleton so admired, lost itself in the wanness of age and pain. When he walked, he had a kind of spring in his gait, as if now and again a buoyant thought lifted him from the ground. It was fine to meet him coming down a Cambridge street; you felt that the encounter made you a part of literary history, and set you apart with him for the moment from the poor and mean. When he appeared in Harvard Square, he beatified if not beautified the ugliest and vulgarest looking spot on the planet outside of New York. You could meet him sometimes at the market, if you were of the same provision-man as he, for Longfellow remained as constant to his tradespeople as to any other friends. He rather liked to bring his proofs back to the printer himself, and we often found ourselves together at the University Press, where _The Atlantic Monthly_ used to be printed. But outside of his own house Longfellow seemed to want a fit atmosphere, and I love best to think of him in his study, where he wrought at his lovely art with a serenity expressed in his smooth, regular, and scrupulously perfect handwriting. It was quite vertical, and rounded, with a slope neither to the right nor left, and at the time I knew him first, he was fond of using a soft pencil on printing paper, though commonly he wrote with a quill. Each letter was distinct in shape, and between the verses was always the exact space of half an inch. I have a good many of his poems written in this fashion, but whether they were the first drafts or not I cannot say; very likely not. Towards the last he no longer sent the poems to the magazines in his own hand, but they were always signed in autograph. "I once asked him if he were not a great deal interrupted, and he said, with a faint sigh, Not more than was good for him, he fancied; if it were not for the interruptions, he might overwork. He was not a friend to stated exercise, I believe, nor fond of walking, as Lowell was; he had not, indeed, the childish associations of the younger poet with the Cambridge neighborhoods; and I never saw him walking for pleasure except on the east veranda of his house, though I was told he loved walking in his youth. In this and in some other things Longfellow was more European than American, more Latin than Saxon. He once said quaintly that one got a great deal of exercise in putting on and off one's overcoat and overshoes....