“There are women in whom the love of a lover extinguishes all other loves, and I think that she must have been one.”

“Accounts are not quite settled between us," said she, with a passion that equaled my own. "I can love, and I can hate. You had your choice. You chose to spurn the first; now you must test the other.”

“From the first day I met her, she was the only woman to me. Every day of that voyage I loved her more, and many a time since have I kneeled down in the darkness of the night watch and kissed the deck of that ship because I knew her dear feet had trod it. She was never engaged to me. She treated me as fairly as ever a woman treated a man. I have no complaint to make. It was all love on my side, and all good comradeship and friendship on hers. When we parted she was a free woman, but I could never again be a free man.”

“To Sherlock Holmes she is always the woman. I have seldom heard him mention her under any other name. In his eyes she eclipses and predominates the whole of her sex. It was not that he felt any emotion akin to love for Irene Adler. All emotions, and that one particularly, were abhorrent to his cold, precise but admirably balanced mind. He was, I take it, the most perfect reasoning and observing machine that the world has seen.... And yet there was but one woman to him, and that woman was the late Irene Adler, of dubious and questionable memory.”

“Miss Morstan and I stood together, and her hand was in mine. A wondrous subtle thing is love, for here were we two, who had never seen each other until that day, between whom no word or even look of affection had ever passed, and yet now in an hour of trouble our hands instinctively sought for each other. I have marveled at it since, but at the time it seemed the most natural thing that I would go out to her so, and, as she has often told me, there was in her also the instinct to turn to me for comfort and protection. So we stood hand in hand like two children, and there was peace in our hearts for all the dark things that surrounded us.”

“A wondrous subtle thing is love, for here were we two, who had never seen each other before that day, between whom no word or even look of affection had ever passed, and yet now in an hour of trouble our hands instinctively sought for each other”

“All my instincts are one way, and all the facts are the other, and I much fear that British juries have not yet attained that pitch of intelligence when they will give the preference to my theories over Lestrade's facts.”