Your life is not your own. Keep your hands off it.

I had ... come to an entirely erroneous conclusion, which shows, my dear Watson, how dangerous it always is to reason from insufficient data.

When you have one of the first brains of Europe up against you, and all the powers of darkness at his back, there are infinite possibilities.

I felt Holmes's hand steal into mine and give me a reassuring shake. - Watson

Once or twice in my career I feel that I have done more real harm by my discovery of the criminal than ever he had done by his crime. I have learned caution now, and I had rather play tricks with the law of England than with my own conscience.

No violence, gentlemen — no violence, I beg of you! Consider the furniture!

It's quite exciting," said Sherlock Holmes, with a yawn.