“I think there are certain crimes which the law cannot touch, and which therefore, to some extent, justify private revenge.”

“Are they not fresh and beautiful?" [Watson] cried...Holmes shook his head gravely."... You look at these scattered houses, and you are impressed bu their beauty. I look at them, and the only thought which comes to me is a feeling of their isolation and of the impunity with which crime may be committed here... They always filled me with a certain horror. It is my belief, Watson... that the lowest and vilest alleys in London do not present a more dreadful record of sin than does the smiling and beauty of the countryside... But the reason is obvious. The pressure of public opinion can do in the town what the law cannot accomplish.”

“I should prefer that you do not mention my name at all in connection with this case, as I choose to be only associated with those crimes which present some difficulty in their solution.”

“I must thank you,' said Sherlock Holmes, 'for calling my attention to a case which certainly presents some features of interest. I had observed some newspaper comment at the time, but I was exceedingly preoccupied by that little affair of the Vatican cameos, and in my anxiety to oblige the Pope I lost touch with several interesting English cases.”

“There are no crimes and no criminals in these days. What is the use of having brains in our profession? I know well that I have it in me to make my name famous. No man lives or has ever lived who has brought the same amount of study and of natural talent to the detection of crime which I have done. And what is the result? There is no crime to detect, or, at most, some bungling villainy with a motive so transparent that even a Scotland Yard official can see through it.”

“Do you know, Watson," said he, "that it is one of the curses of a mind with a turn like mine that I must look at everything with reference to my own special subject. You look at these scattered houses, and you are impressed by their beauty. I look at them, and the only thought which comes to me is a feeling of their isolation and of the impunity with which crime may be committed there.”

“As a rule, the more bizarre a thing is the less mysterious it proves to be. It is your commonplace, featureless crimes which are really puzzling, just as a commonplace face is the most difficult to identify.”