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It is a capital mistake to theorize before you have all of the evidence. It biases the… — Arthur Conan Doyle

Novel · Magazine · Detective fiction

It is a capital mistake to theorize before you have all of the evidence. It biases the judgement.

Arthur Conan Doyle
A Study in Scarlet · 1887
★ 3.7
Provenance
Current citation
Doyle, Arthur Conan. A Study in Scarlet. The Sherlock Holmes Collector's Library. Detective Fiction, 2012, pt. 1, ch. 3.
Original citation
Doyle, Arthur Conan. "A Study in Scarlet." Beeton's Christmas Annual. London: Ward Lock & Co., 1887.

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