Crime is common. Logic is rare. Therefore it is upon the logic rather than upon the crime that you should dwell.

Ex-Professor Moriarty of mathematical celebrity... is the Napoleon of crime, 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.

Beyond the obvious facts that he has at some time done manual labour, that he takes snuff, that he is a Freemason, that he has been in China, and that he has done a considerable amount of writing lately, I can deduce nothing else.

The lowest and vilest alleys of London do not present a more dreadful record of sin than does the smiling and beautiful countryside.

You have a grand gift for silence, Watson. It makes you quite invaluable as a companion.

Work is the best antidote to sorrow, my dear Watson.