Detection is, or ought to be, an exact science, and should be treated in the same cold and unemotional manner.

He had never seen a woman doctor before, and his whole conservative soul rose up in revolt at the idea. He could not recall any biblical injunction that the man should remain ever the doctor and the woman the nurse, and yet he felt as if a blasphemy had been committed.

Should I ever marry, Watson, I should hope to inspire my wife with some feeling which would prevent her from being walked off by a housekeeper when my corpse was lying within a few yards of her.

My life is spent in one long effort to escape from the commonplaces of existence. These little problems help me to do so.

Amberley excelled at chess - a mark, Watson, of a scheming mind.

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.

There's a light in a woman's eyes that speaks louder than words.