(An unknown party has left his cane behind. Holmes and Watson examine it and theorize as to its owner. Watson goes first and, as always, is dead-ass wrong.)
"Really, Watson, you excel yourself... I am bound to say that in all the accounts which you have been so good as to give of my own small acheivements you have habitually underrated your own abilities. It may be that you are not yourself luminous, but you are a conductor of light. Some people without possessing genius have a remarkable power of stimulating it. I confess, my dear fellow, that I am very much in your debt."
...He now took the stick from my hands and examined it for a few minutes.
"...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 toward the truth."