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.

It’s every man’s business to see justice done.

Art in the blood is liable to take the strangest forms.

Now is the dramatic moment of fate, Watson, when you hear a step upon the stair which is walking into your life, and you know not whether for good or ill.

It is a fool's plan to teach a man to be a cur in peace, and think that he will be a lion in war.

I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose.

Excellent!" I cried. "Elementary," said he.