What a lovely thing a rose is!

For strange effects and extraordinary combinations we must go to life itself, which is always far more daring than any effort of the imagination.

I have already explained to you that what is out of the common is usually a guide rather than a hindrance.

There is danger for him who taketh the tiger cub, and danger also for whoso snatches a delusion from a woman.

A study in scarlet, eh? Why shouldn't we use a little art jargon? There's the scarlet thread of murder running through the colourless skein of life, and our duty is to unravel it, and isolate it, and expose every inch of it.

The ideal reasoner, he remarked, would, when he had once been shown a single fact in all its bearings, deduce from it not only all the chain of events which led up to it but also all the results which would follow from it.

The more outré and grotesque an incident is the more carefully it deserves to be examined.