- Sherlock Holmes: You mentioned your name just now as if I should recognize it but I can assure you beyond the obvious facts that you are a bachelor, a solicitor and a Freemason, and an asthmatic, I know nothing about you whatever.
- Inspector Lestrade: Anything more you'd like to ask, Mr. Holmes?
- Sherlock Holmes: Not until I've been to Blackheath.
- Inspector Lestrade: You mean Norwood.
- Sherlock Holmes: [smiling] No doubt that is what I must have meant.
- Sherlock Holmes: You've found something?
- Dr. John Watson: No, it's what I haven't found that interests me.
- [first lines]
- Dr. John Watson: Thank you, George.
- Sherlock Holmes: From the point of view of the criminal expert, London has become a singularly uninteresting city.
- Dr. John Watson: Well, I hardly think you'll find many decent citizens to agree with you.
- Sherlock Holmes: Well, well, well, one must not be selfish. The community's the gainer and no-one the loser, save the poor unfortunate specialist whose occupation has gone.
- [last lines]
- Jonas Oldacre: See you hang for this!
- Sherlock Holmes: That privilege must surely be mine.
- Inspector Lestrade: Well, Mr. Holmes, there's no denying that you have been of use to the force once or twice in the past.
- Sherlock Holmes: [about a newly discovered thumbprint on the wall] And I suppose there is no doubt that the mark was there yesterday?
- Inspector Lestrade: Well, of course, McFarlane could have crept out of jail in the middle of the night just to strengthen the evidence against himself.