Really, Watson, you excel yourself," said Holmes, pushing back his chair and lighting a cigarette. "I am bound to say that in all the accounts which you have been so good as to give of my own small achievements you have habitually underrated your own abilities. It may be that you are not yourself luminous, but you are a conductor of light. Some people without possessing genius have a remarkable power of stimulating it. I confess, my dear fellow, that I am very much in your debt.

You know how easily and suddenly these things happen, beginning in playful teasing and ending in something a little warmer than friendship. You squeeze the slender arm which is passed through yours, you venture to take the little gloved hand, you say good night at absurd length in the shadow of the door. It is innocent and very interesting, love trying his wings in a first little flutter.

Healthy scepticism is the basis of all accurate observation.

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

Life, my dear Watson, is infinitely stranger than fiction; stranger than anything which the mind of man could invent. We could not conceive the things that are merely commonplace to existence. If we could hover over this great city, remove the roofs, and peep in at the things going on, it would make all fiction, with its conventionalities and foreseen conclusions flat, stale and unprofitable.

Violence recoils on the violent.

What a creature he was! Never have I felt such a horse between my knees. His great haunches gathered under him with every stride, and he shot forward ever faster and faster, stretched like a greyhound, while the windbeat in my face and whistled past my ears.