“My dear Watson, you as a medical man are continually gaining light as to the tendencies of a child by the study of the parents. Don't you see that the converse is equally valid. I have frequently gained my first real insight into the character of parents by studying their children.”—Sherlock Holmes, “The Adventure of the Copper Beeches”

“The most serious point in the case is the disposition of the child."What on earth has that to do with it?" I ejaculated.My dear Watson, you as a medical man are continually gaining insight as to the tendencies of a child by the study of the parents. Don't you see that the converse is equally valid. I have frequently gained my first real insight into the character of parents by studying their children.”

“I am lost without my Boswell.[Sherlock Holmes on Dr. Watson.]”

“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.”

“So it was, my dear Watson, that at two o'clock today I found myself in my old armchair in my own old room, and only wishing that I could have seen my old friend Watson in the other chair which he has so often adorned.- Sherlock Holmes.”

“Elementary, my dear Watson.""That's a misquotation, by the way," I countered without thinking. Which might've made more of an impact if I'd stopped grinning like a cretin."See? Ten minutes and you already know I read Sherlock Holmes. Just imagine what you could discover if we went out on a real date.”