Bertolt Brecht

If the concept of 'work of art' can no longer be applied to the thing that emerges once the work is transformed into a commodity, we have to eliminate this concept with cautious care but without fear, lest we liquidate the function of the very thing as well. For it has to go through this phase without mental reservation, and not as noncommittal deviation from the straight path; rather, what happens here with the work of art will change it fundamentally and erase its past to such an extent that should the old concept be taken up again - and it will, why not? - it will no longer stir any memory of the thing it once designated.

a quotation from Walter Benjamin's essay The Work of Art in the Age of Mechanical Reproduction.