The Adventure of the Noble Bachelor

Violence recoils on the violent.

I have heard, Mr. Holmes, that you can see deeply into the manifold wickedness of the human heart.

Eliminate all other factors, and the one which remains must be the truth.

'There's no need for fiction in medicine,' remarks Foster... 'for the facts will always beat anything you fancy.'

So tomorrow we disappear into the unknown. This account I am transmitting down the river by canoe, and it may be our last word to those who are interested in our fate.

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.