This letter, however, is valuable; inasmuch as it shows what Branwell, at this young period of his life, knew about human nature, and the depths to which it can descend. He had penetrated into the passions, feelings, and dispositions of his acquaintances by frequent intercourse, by keen perception, and by familiar conversation. He had heard them, noticed them, and could paint their characters with unerring precision and vivid colouring. He was acquainted with the ways of society, and the customs of domestic life. The world was to him a picture-gallery, and all living things in it were studies of the deepest interest. His knowledge of men and manners, of the hard, implacable, and selfish, and also of the soft, tender, and gentle natures of men and women, enabled him to cast their stories of sorrow and gladness faithfully and well. At the time when he had attained manhood, when his intellects were reaching their full development, he had already been drawn into society, and indoctrinated into the mysteries of Haworth life; and had become acquainted with the excesses of men older and harder than himself. It cannot be wondered at that, if he had learned more than is usual in youth, he did not escape the temptations attendant on the peculiar knowledge he had acquired. But, while _he_ was thus passing through the crooked ways and reckless deviations of the world, obtaining a large crop of experiences, good and bad, his _sisters_ were, for the most part, at home, living like recluses, and, when away, were still in similar seclusion. Of Emily, Charlotte says, 'I am bound to avow that she had scarcely more practical knowledge of the peasantry amongst whom she lived, than a nun has of the country people who sometimes pass her convent gates. My sister's disposition was not naturally gregarious; circumstances favoured and fostered her tendency to seclusion; except to go to church or take a walk on the hills, she rarely crossed the threshold of home. Though her feeling for the people round her was benevolent, intercourse with them she never sought, nor, with very few exceptions, ever experienced. And yet she knew them, knew their ways, their language, their family histories; she could hear of them with interest, and talk of them _with_ detail, minute, graphic, and accurate; but with them she rarely exchanged a word.'[31] But Branwell walked and held personal intercourse, as we have seen, with the people whom Emily shunned; and his personal knowledge, and his unquestionable genius combined, enabled him to grasp and appreciate, to dissect with penetrating skill, and to estimate and define the tendency of the strong and marked character of the people around him. It is, therefore, doubly unfortunate that, from Branwell, we have little remaining in the way of graphic description, and that the rich treasures of observation which he outpoured have, for the most part, left their impressions only in the memories of those who were privileged to hear him discourse.