You see, but you do not observe. The distinction is clear.

Arthur Conan Doyle (1859–1930) British writer and physician
Story (1891-07), “A Scandal in Bohemia,” ch. 1 [Holmes], The Strand Magazine, Vol. 2, No. 1
    (Source)

Collected in The Adventures of Sherlock Holmes, No. 1, ch. 1 (1892).