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.

There was a brisk northern wind, heavy and wet with the salt of the sea, and he felt, as he turned his face to it, fresh life and strength surging in his blood and bracing his limbs.

I followed you.' I saw no one.' That is what you may expect to see when I follow you.

When you have eliminated the impossible, what is left, no matter how unlikely, is the truth.

There is no scent so pleasant to my nostrils as that faint, subtle reek which comes from an ancient book.

We surely know by some nameless instinct more about our futures than we think we know.

"I can see nothing," said I, handing it back to my friend. "On the contrary, Watson, you can see everything. You fail, however, to reason from what you see. You are too timid in drawing your inferences."