“You see, but you do not observe.”
Arthur Conan Doyle A Scandal in Bohemia
Source: A Scandal in Bohemia
Sir Arthur Ignatius Conan Doyle, KStJ, DL was a British writer best known for his detective fiction featuring the character Sherlock Holmes. Originally a physician, in 1887 he published A Study in Scarlet, the first of four novels about Holmes and Dr. Watson. In addition, Doyle wrote over fifty short stories featuring the famous detective. The Sherlock Holmes stories are generally considered milestones in the field of crime fiction.
Doyle was a prolific writer; his non-Sherlockian works include fantasy and science fiction stories about Professor Challenger and humorous stories about the Napoleonic soldier Brigadier Gerard, as well as plays, romances, poetry, non-fiction and historical novels. One of Doyle's early short stories, "J. Habakuk Jephson's Statement", helped to popularise the mystery of the Mary Celeste.

“You see, but you do not observe.”
Arthur Conan Doyle A Scandal in Bohemia
Source: A Scandal in Bohemia
“Education never ends, Watson. It is a series of lessons, with the greatest for the last.”
Source: His Last Bow: 8 Stories
“The world is full of obvious things which nobody by any chance ever observes.”
Arthur Conan Doyle book The Hound of the Baskervilles
Source: The Hound of the Baskervilles
“Life is infinitely stranger than anything which the mind of man could invent.”
Arthur Conan Doyle book A Case of Identity
Source: A Case of Identity
“You are my heart, my life, my one and only thought.”
Arthur Conan Doyle book The White Company
The White Company (1891)
“Life, it turns out, is infinitely more clever and adaptable than anyone had ever supposed.”
Arthur Conan Doyle book The Case-Book of Sherlock Holmes
Source: The Case-Book of Sherlock Holmes
Source: The Complete Sherlock Holmes
Arthur Conan Doyle book A Study in Scarlet
Source: A Study in Scarlet
“There are always some lunatics about. It would be a dull world without them.”
Source: The Red Headed League
“Work is the best antidote to sorrow, my dear Watson.”
Arthur Conan Doyle book The Return of Sherlock Holmes
Source: The Return of Sherlock Holmes
“The emotional qualities are antagonistic to clear reasoning.”
Arthur Conan Doyle book The Sign of the Four
Source: The Sign of Four
Arthur Conan Doyle book The Return of Sherlock Holmes
Source: The Return of Sherlock Holmes
“It has long been an axiom of mine that the little things are infinitely the most important.”
Arthur Conan Doyle book The Memoirs of Sherlock Holmes
Source: The Memoirs of Sherlock Holmes
“You have a grand gift for silence, Watson. It makes you quite invaluable as a companion.”
Source: The Complete Sherlock Holmes
“My name is Sherlock Holmes. It is my business to know what other people do not know.”
Arthur Conan Doyle The Adventure of the Blue Carbuncle
Source: The Adventure of the Blue Carbuncle
“Excellent!" I cried. "Elementary," said he.”
Source: The Complete Sherlock Holmes
Arthur Conan Doyle book The Sign of the Four
Variant: When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.
Source: The Sign of Four
“What one man can invent, another can discover.”
Arthur Conan Doyle book The Adventure of the Dancing Men
Source: The Adventure of the Dancing Men
“It's quite exciting," said Sherlock Holmes, with a yawn.”
Arthur Conan Doyle book A Study in Scarlet
Source: A Study in Scarlet
“Where there is no imagination, there is no horror.”
Arthur Conan Doyle book A Study in Scarlet
Source: A Study in Scarlet
“Of all ghosts the ghosts of our old loves are the worst.”
Source: The Memoirs Of Sherlock Holmes
“If you had killed Watson, you would not have got out of this room alive.”
Arthur Conan Doyle book The Case-Book of Sherlock Holmes
Source: The Case-Book of Sherlock Holmes
“It is stupidity rather than courage to refuse to recognize danger when it is close upon you.”
Arthur Conan Doyle book The Memoirs of Sherlock Holmes
Source: The Memoirs of Sherlock Holmes
“It is a capital mistake to theorise before one has data.”
Arthur Conan Doyle book The Adventures of Sherlock Holmes
Source: The Adventures of Sherlock Holmes
“There is nothing more stimulating than a case where everything goes against you.”
Arthur Conan Doyle book The Hound of the Baskervilles
Variant: There is nothing more deceptive than an obvious fact.
Source: The Hound of the Baskervilles
“My mind rebels at stagnation, give me problems, give me work!”
Arthur Conan Doyle book The Sign of the Four
Source: The Sign of Four
“Mediocrity knows nothing higher than itself; but talent instantly recognizes genius.”
Arthur Conan Doyle book The Valley of Fear
Source: The Valley of Fear
“Evil indeed is the man who has not one woman to mourn him.”
Arthur Conan Doyle book The Hound of the Baskervilles
Source: The Hound of the Baskervilles
“By George!" cried the inspector. "How did you ever see that?"
Because I looked for it.”
Arthur Conan Doyle book The Adventure of the Dancing Men
Source: The Adventure of the Dancing Men
Arthur Conan Doyle book The Adventures of Sherlock Holmes
Source: The Adventures of Sherlock Holmes
“…but it is better to learn wisdom late than never to learn it at all.”
Arthur Conan Doyle book The Man with the Twisted Lip
Source: The Man with the Twisted Lip
Source: The Final Problem and Other Stories
“A change of work is the best rest.”
Arthur Conan Doyle book The Sign of the Four
Source: The Sign of Four
Source: Sherlock Holmes: The Complete Novels and Stories, Volume I
“He seems to have declared war on the King’s English as well as on the English king.”
Source: His Last Bow: 8 Stories
“Watson. Come at once if convenient. If inconvenient, come all the same.”
Source: Sherlock Holmes: Adventure of the Creeping Man
Before showing test footage from the movie The Lost World, based upon his novel, as a trick at the annual meeting of the Society of American Magicians in 1922. The New York Times ran a story the next day: DINOSAURS CAVORT IN FILM FOR DOYLE SPIRITIST MYSTIFIES WORLD-FAMED MAGICIANS WITH PICTURES OF PREHISTORIC BEASTS — KEEPS ORIGIN A SECRET — MONSTERS OF OTHER AGES SHOWN, SOME FIGHTING, SOME AT PLAY, IN THEIR NATIVE JUNGLES
Context: These pictures are not occult, but they are psychic because everything that emanates from the human spirit or human brain is psychic. It is not supernatural; nothing is. It is preternatural in the sense that it is not known to our ordinary senses. It is the effect of the joining on the one hand of imagination, and on the other hand of some power of materialization. The imagination, I may say, comes from me — the materializing power from elsewhere.
Arthur Conan Doyle book The Stark Munro Letters
The Stark Munro Letters (1894)
Context: The more we progress the more we tend to progress. We advance not in arithmetical but in geometrical progression. We draw compound interest on the whole capital of knowledge and virtue which has been accumulated since the dawning of time. Some eighty thousand years are supposed to have existed between paleolithic and neolithic man. Yet in all that time he only learned to grind his flint stones instead of chipping them. But within our father's lives what changes have there not been? The railway and the telegraph, chloroform and applied electricity. Ten years now go further than a thousand then, not so much on account of our finer intellects as because the light we have shows us the way to more. Primeval man stumbled along with peering eyes, and slow, uncertain footsteps. Now we walk briskly towards our unknown goal.
Arthur Conan Doyle book The Stark Munro Letters
The Stark Munro Letters (1894)
Context: When you look closely it is a question whether that which is a wrong to the present community may not prove to have been a right to the interests of posterity. That sounds a little foggy; but I will make my meaning more clear when I say that I think right and wrong are both tools which are being wielded by those great hands which are shaping the destinies of the universe, that both are making for improvement; but that the action of the one is immediate, and that of the other more slow, but none the less certain. Our own distinction of right and wrong is founded too much upon the immediate convenience of the community, and does not inquire sufficiently deeply into the ultimate effect.
“Now we walk briskly towards our unknown goal.”
Arthur Conan Doyle book The Stark Munro Letters
The Stark Munro Letters (1894)
Context: The more we progress the more we tend to progress. We advance not in arithmetical but in geometrical progression. We draw compound interest on the whole capital of knowledge and virtue which has been accumulated since the dawning of time. Some eighty thousand years are supposed to have existed between paleolithic and neolithic man. Yet in all that time he only learned to grind his flint stones instead of chipping them. But within our father's lives what changes have there not been? The railway and the telegraph, chloroform and applied electricity. Ten years now go further than a thousand then, not so much on account of our finer intellects as because the light we have shows us the way to more. Primeval man stumbled along with peering eyes, and slow, uncertain footsteps. Now we walk briskly towards our unknown goal.
Arthur Conan Doyle book The Stark Munro Letters
The Stark Munro Letters (1894)
Context: The more we progress the more we tend to progress. We advance not in arithmetical but in geometrical progression. We draw compound interest on the whole capital of knowledge and virtue which has been accumulated since the dawning of time. Some eighty thousand years are supposed to have existed between paleolithic and neolithic man. Yet in all that time he only learned to grind his flint stones instead of chipping them. But within our father's lives what changes have there not been? The railway and the telegraph, chloroform and applied electricity. Ten years now go further than a thousand then, not so much on account of our finer intellects as because the light we have shows us the way to more. Primeval man stumbled along with peering eyes, and slow, uncertain footsteps. Now we walk briskly towards our unknown goal.
“I am a brain, Watson. The rest of me is a mere appendix.”
Arthur Conan Doyle book The Adventure of the Mazarin Stone
Source: The Adventure of the Mazarin Stone
“Women are naturally secretive, and they like to do their own secreting.”
Arthur Conan Doyle book The Adventures of Sherlock Holmes
Source: The Adventures of Sherlock Holmes
“To a great mind, nothing is little,' remarked Holmes, sententiously.”
Arthur Conan Doyle book A Study in Scarlet
Source: A Study in Scarlet
“I am an omnivorous reader with a strangely retentive memory for trifles.”
Source: The Complete Sherlock Holmes

