Where there is no imagination there is no horror.
As a rule, said Holmes, the more bizarre a thing is the less mysterious it proves to be. It is your commonplace, featureless crimes which are really puzzling, just as a commonplace face is the most difficult to identify.
Women are naturally secretive, and they like to do their own secreting.
To the man who loves art for its own sake, it is frequently in its least important and lowliest manifestations that the keenest pleasure is to be derived.
The lowest and vilest alleys of London do not present a more dreadful record of sin than does the smiling and beautiful countryside.
My mind rebels at stagnation. Give me problems, give me work, give me the most abstruse cryptogram, or the most intricate analysis, and I am in my own proper atmosphere. But I abhor the dull routine of existence. I crave for mental exaltation.
London, that great cesspool into which all the loungers and idlers of the Empire are irresistibly drained.
It is a capital mistake to theorize before one has data.
Any truth is better than indefinite doubt.
His ignorance was as remarkable as his knowledge.
A trusty comrade is always of use; and a chronicler still more so.
As Cuvier could correctly describe a whole animal by the contemplation of a single bone, so the observer who has thoroughly understood one link in a series of incidents should be able to accurately state all the other ones, both before and after.
Our ideas must be as broad as Nature if they are to interpret Nature.
From a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other.
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.
It has long been an axiom of mine that the little things are infinitely the most important.
I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose.
How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?
Sir Walter, with his 61 years of life, although he never wrote a novel until he was over 40, had, fortunately for the world, a longer working career than most of his brethren.
Of all ghosts the ghosts of our old loves are the worst.
A man should keep his little brain attic stocked with all the furniture that he is likely to use, and the rest he can put away in the lumber-room of his library, where he can get it if he wants it.
There is nothing more deceptive than an obvious fact.
Nothing clears up a case so much as stating it to another person.
It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth.
I have seen too much not to know that the impression of a woman may be more valuable than the conclusion of an analytical reasoner.