Problems may be solved in the study which have baffled all those who have sought a solution by the aid of their senses. To carry the art, however, to its highest pitch, it is necessary that the reasoner should be able to use all the facts which have come to his knowledge; and this in itself implies, as you will readily see, a possession of all knowledge, which, even in these days of free education and encyclopaedias, is a somewhat rare accomplishment.

It is a capital mistake to theorize before you have all the evidence. It biases the judgment.

Every man finds his limitations, Mr. Holmes, but at least it cures us of the weakness of self-satisfaction.

Well, sir, let us do what we can to curtail this visit, which can hardly be agreeable to you, and is inexpressibly irksome to me.

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.

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

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