“You see, but you do not observe. The distinction is clear.”

— A Scandal in Bohemia — Sherlock Holmes

“I have no data yet. It is a capital mistake to theorise before one has data.”

— A Scandal in Bohemia — Sherlock Holmes

“It is quite a three pipe problem, and I beg that you won’t speak to me for fifty minutes.”

— The Red-Headed League — Sherlock Holmes

“Depend upon it, there is nothing so unnatural as the commonplace.”

— A Case of Identity — Sherlock Holmes

“You know my method. It is founded upon the observation of trifles.”

— The Boscombe Valley Mystery — Sherlock Holmes

“When I glance over my notes and records of the Sherlock Holmes cases between the years ’82 and ’90, I am faced by so many which present strange and interesting features that it is no easy matter to know which to choose and which to leave.”

— The Five Orange Pips — Dr. Watson

“Isa Whitney, brother of the late Elias Whitney, D.D., Principal of the Theological College of St. George’s, was much addicted to opium.”

— The Man with the Twisted Lip — Dr. Watson

“Here is my lens. You know my methods. What can you gather yourself as to the individuality of the man who has worn this article?”

— The Adventure of the Blue Carbuncle — Sherlock Holmes

“When a doctor does go wrong he is the first of criminals. He has nerve and he has knowledge.”

— The Adventure of the Speckled Band — Sherlock Holmes

“Indirectly it may be of value, you know; you have only to put it into words to gain the reputation of being excellent company for the remainder of your existence.”

— The Adventure of the Engineer’s Thumb — Sherlock Holmes

“perhaps you would not be very gracious either, if, after all the trouble of wooing and wedding, you found yourself deprived in an instant of wife and of fortune.”

— The Adventure of the Noble Bachelor — Sherlock Holmes

“It is my belief, Watson, founded upon my experience, that the lowest and vilest alleys in London do not present a more dreadful record of sin than does the smiling and beautiful countryside.”

— The Adventure of the Copper Beeches — Sherlock Holmes