Sherlock Holmes in "The Adventure of the Cardboard Box" (1893). In "The Adventure of the Greek Interpreter" (1893) Holmes tells Doctor Watson, "All things should be seen exactly as they are."
Sir Arthur Conan Doyle (2014). “Sherlock Holmes Complete Collection With illustrated Adventures of Sherlock Holmes - 4 Novels, 56 Short Stories and 120+ illustrations”, p.865, Ageless Reads