Quoting Wikipedia on Walter Benjamin’s Aura in Art Reproductions

Source, from section “Critique”:

The power of art does not reside in the uniqueness of the physical object, but in the statement made by the artist through the work. Reproducing that statement does not weaken it but strengthens its impact with each additional person such a reproduction reaches. Munch’s “The Scream”, for example, is known mostly from reproduction yet its aura, its power to impress, does not come from the uniqueness of a painting or drawing, but the uniqueness of the work’s content, which retains its effect no matter how often reproduced.

Also see previous post.