“It is cocaine," he said, "a seven-per-cent solution. Would youcare to try it?""No, indeed," I answered brusquely. "My constitution has not gotover the Afghan campaign yet. I cannot afford to throw any extrastrain upon it."He smiled at my vehemence. "Perhaps you are right, Watson," hesaid. "I suppose that its influence is physically a bad one. I findit, however, so transcendently stimulating and clarifying to themind that its secondary action is a matter of small moment.”

“You would not call me a marrying man, Watson?""No, indeed!""You'll be interested to hear that I'm engaged.""My dear fellow! I congrat-""To Milverton's housemaid.""My dear Holmes!""I wanted information, Watson.”

“I am afraid, my dear Watson, that most of your conclusions were erroneous. When I said that you stimulated me I meant, to be frank, that in noting your fallacies I was occasionally guided towards the truth. Not that you are entirely wrong in this instance”

“If I remember rightly, you on one occasion defined my limits in a very precise fashion.""Yes," [Watson] answered, laughing. "It was a singular document. Philosophy, astronomy, and politics were marked at zero, I remember. Botany variable, geology profound as regards the mudstains from any region within fifty miles of town, chemistry eccentric, anatomy unsystematic, sensational literature and crime records unique, violin player, boxer, swordsman, lawyer, and self-poisoner by cocaine and tobacco. Those, I think, were the main points of my analysis.”

“Very sorry to knock you up, Watson,' said he [Holmes], 'but it is a common lot this morning. Mrs Hudson has been knocked up, she retorted upon me, and I on you.”

“I say, Watson,’ he whispered, ‘would you be afraid to sleep in the same room as a lunatic, a man with softening of the brain, an idiot whose mind has lost its grip?’‘Not in the least,’ I answered in astonishment.‘Ah, that’s lucky,’ he said, and not another word would he utter that night.”

“I said that he was my superior in observation and deduction. If the art of the detective began and ended in reasoning from an armchair, my brother would be the greatest criminal agent that ever lived. But he has no ambition and no energy. He will not even go out of his way to verify his own solutions, and would rather be considered wrong than take the trouble to prove himself right.”