It is a capital mistake to theorize before one has data. ✨ A Scandal i…

Arthur Conan Doyle
355 citations
It is a capital mistake to theorize before one has data. ✨ A Scandal in Bohemia (1891)
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Circumstantial evidence is occasionally very convincing, as when you find a trout in the milk, to quote Thoreau's example. ✨ Arthur Conan Doyle (2007). The New Annotated Sherlock Holmes: The Complete … ▶
Some facts should be suppressed, or, at least, a just sense of proportion should be observed in treating them. ✨ Arthur Conan Doyle (2016). The Sign of the Four, p.18, Arthur Conan Doyle
Detection is, or ought to be, an exact science, and should be treated in the same cold and unemotional manner. ✨ The Sign of the Four ch. 1 (1890)
I rose to go, but Holmes caught me by my wrist and pushed me back into my chair. 'It is both, or none,' said he. 'You may say before this gentleman anything which you may say to me. ✨ Arthur Conan Do … ▶
Accounts are not quite settled between us, said she, with a passion that equaled my own. I can love, and I can hate. You had your choice. You chose to spurn the first; now you must test the other. ✨ … ▶

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