All right, Watson. Don’t look so scared,” he muttered in a very weak voice. “It’s not as bad as it seems.” “Thank God for that!” “I’m a bit of a single-stick expert, as you know. I took most of them on my guard. It was the second man that was too much for me.” “What can I do, Holmes? Of course, it was that damned fellow who set them on. I’ll go and thrash the hide off him if you give the word.” “Good old Watson!(...)

...while the individual man is an insoluble puzzle, in the aggregate he becomes a mathematical certainty.

The Adventure of the Noble Bachelor

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.

You know how easily and suddenly these things happen, beginning in playful teasing and ending in something a little warmer than friendship. You squeeze the slender arm which is passed through yours, you venture to take the little gloved hand, you say good night at absurd length in the shadow of the door. It is innocent and very interesting, love trying his wings in a first little flutter.

The stage lost a fine actor, even as science lost an acute reasoner, when [Holmes] became a specialist in crime.

He foresaw that she would be very much more useful to him in the character of a free woman.