Who is credited as saying the following?

You see, but you do not observe.


Note: Either of two answers is acceptable, and that is a hint.

Robert J. Sawyer

It was also said by sherlock holmes which is a book written by sit arthur conan doyle.

When did Sawyer say it? The answers I was looking for were Holmes or Doyle.

You see, but you do not observe. - Sir Arthur Conan Doyle, (Sherlock Holmes) A Scandal in Bohemia, 1892


I see that Sawyer said it much later, in a Holmes story that he wrote. He was quoting Holmes/Doyle.