“The Frenchman sat up with that strange energy which comes often as the harbinger of death. "(...) This I tell you - I, Raoul de la Roche Pierre de Bras, dying upon the field of honour. And now kiss me, sweet friend, and lay me back, for the mists closes round me and I am gone!"With tender hands the squire [Nigel] lowered his comrade's head, but even as he did so there came a choking rush of blood, and the soul had passed. So died a gallant cavalier of France, and Nigel, as he knelt in the ditch beside him, prayed that his own end might be as noble and as debonair.”

“Perchance you shall, fair sir," said Nigel, "for all that I have seen of you fills me with this desire to go further with you. It is in my mind that we might turn this thing to profit and to honour, for when Sir Robert has spoken to you, I am free to do with you as I will.”

“That any civilized human being in this nineteenth century should not be aware that the earth traveled round the sun appeared to me to be such an extraordinary fact that I could hardly realize it.‘You appear to be astonished,’ he said, smiling at my expression of surprise. ‘Now that I do know it I shall do my best to forget it.’‘To forget it!’‘You see,’ he explained, ‘I consider that a man’s brain is like a little empty attic, and you have to stock it with such furniture as you choose. A fool takes in all the lumber of every sort that he comes across, so that the knowledge which might be useful to him gets crowded out, or at best is jumbled up with a lot of other things, so that he has difficulty in laying his hands upon it. Now the skilful workman is very careful indeed as to what he takes into his brain-attic. He will have nothing but the tools which may help him in doing his work, but of these he has a large assortment, and all in most perfect order. It is a mistake to think that that that little room has elastic walls and can distend to any extent. Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones.’‘But the Solar System!’ I protested.‘What the deuce is it to me?’ he interrupted impatiently: ‘you say that we go round the sun. If we went round the moon it would not make a pennyworth of difference to me or to my work.”

“One night--it was on the twentieth of March, 1888--I was returning from a journey to a patient(for I had now returned to civil practice), when my way led me through Baker Street. As I passed the well-remembered door...I was seized with a keen desire to see Holmes again, and to know how he was employing his extraordinary powers. His rooms were brilliantly lit, and, even as I looked up, I saw his tall, spare figure pass twice in a dark silhouette against the blind. He was pacing the room swiftly, eagerly, with his head sunk upon his chest and his hands clasped behind him. To me, who knew his every mood and habit, his attitude and manner told their own story. He was at work again. He had risen out of his drug-created dreams and was hot upon the scent of some new problems.”

“Over the green squares of the fields and the low curves of a wood there rose in the distance a grey, melancholy hill, with a strange jagged summit, dim and vague in the distance like some fantastic landscape in a dream. Baskerville sat for a long time, his gaze fixed upon it, and I read upon his eager face how much it meant to him, this first sight of that strange spot where the men of his blood had held sway so long and left their mark so deep.”

“The swing of his nature took him from extreme languor to devouring energy; and as I knew well, he was never so truly formidable as when, for days on end, he had been lounging in his armchair amid his improvisations and his black-letter editions. Then it was that the lust of the chase would suddenly come upon him, and that his brilliant reasoning power would rise to the level of intuition, until those who were unacquainted with his methods would look askance at him as on a man whose knowledge was not that of other mortals. When I saw him that afternoon so enwrapped in the music of St. James's Hall I felt that an evil time might be coming upon those whom he had set himself to hunt down.”

“Holmes was for the moment as startled as I. His hand closed like a vice upon my wrist in his agitation. Then he broke into a low laugh and put his lips to my ear."It is a nice household," he murmured. "That is the baboon.”