It is decreed by a merciful Nature that the human brain cannot think of two things simultaneously . . .

The good Watson had at that time deserted me for a wife, the only selfish action I can recall in our association. I was alone.

A study of family portraits is enough to convert a man to the theory of reincarnation.

It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

A client is to me a mere unit, a factor in a problem.

Oh how I've missed you, Holmes.

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.