I said that he was my superior in observation and deduction. If the art of the detective began and ended in reasoning from an armchair, my brother would be the greatest criminal agent that ever lived. But he has no ambition and no energy. He will not even go out of his way to verify his own solutions, and would rather be considered wrong than take the trouble to prove himself right.

Man, or at least criminal man, has lost all enterprise and originality. As to my own little practice, it seems to be degenerating into an agency for recovering lost lead pencils and giving advice to young ladies from boarding-schools.

The more outré and grotesque an incident is the more carefully it deserves to be examined.

Draw your chair up, and hand me my violin, for the only problem which we have still to solve is how to while away these bleak autumnal evenings.

Violence recoils on the violent.

You know my methods. Apply them.

His neighbor is a tooth-drawer. That bag at his girdle is full of the teeth that he drew at Winchester fair. I warrant that there are more sound ones than sorry, for he is quick at his work and a trifle dim in the eye.