- Sherlock Holmes: I merely wanted to know you a little better.
- Prof. Moriarty: Several Scotland Yard Inspectors tried that. Their lifeless bodies were found floating in the Thames.
- Sherlock Holmes: Oh! - Well, of course, if you're as difficult to know as all that, I'd better be getting back my microbes.
- Sherlock Holmes: Please don't think me impertinent, but I know that revenge will only embitter your own life and in no way lessen the wrong that has been done.
- Sherlock Holmes: My name is Sherlock Holmes. I-I am a student - a student of life. Its complexities fascinate me...
- Dr. Watson: I say, Holmes, you are an odd chap, why have you kept that photograph all these years?
- Sherlock Holmes: Oh, I don't know - there was a familiar - charming something - about the eyes - that reminded me of her sister - the girl I met on the roadside that day. I don't know what ever became of her. After her sister's death, I wrote, asking if I could be of assistance - but she never answered - I...
- Sherlock Holmes: It was extraordinary Watson - seeing that girl again - made me almost forget my purpose - I wanted to take her away.
- Prof. Moriarty: Sherlock Holmes is gradually completing a chain of evidence that will reach to me as surely as I stand here. Something must be done!