"I have the advantage of knowing your habits, my dear Watson," said he. "When your round is a short one you… — Arthur Conan Doyle
"I have the advantage of knowing your habits, my dear Watson," said he. "When your round is a short one you walk, and when it is a long one you use a hansom. As I perceive that your boots, although used, are by no means dirty, I cannot doubt that you are at present busy enough to justify the hansom."
"Excellent!" I cried.
"Elementary," said he.
p. 412Source: Wikiquote · CC BY-SA 4.0
