Правда ли Arthur Conan Doyle сказал «You see, but you do not observe»?

Правда ли Arthur Conan Doyle сказал «You see, but you do not observe»?

Найдено дословно. Да. Текст есть в произведениях автора: Arthur Conan Doyle. Источник и место ниже.

"Quite so," he answered, lighting a cigarette, and throwing himself down into an armchair. "You see, but you do not observe. The distinction is clear. For example, you have frequently seen the steps which lead up from the hall to this room."
The Adventures of Sherlock Holmes — Arthur Conan Doyle, ¶21 · Public domain (US), Project Gutenberg #1661 · источник

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