Delay in glass

Use ‘delay’ instead of picture or painting; picture on glass becomes delay in glass—but delay in glass does not mean picture on glass— It’s merely a way of succeeding in no longer thinking that the thing in question is a picture—to make a delay of it in the most general way possible, not so much in the different meanings in which delay can be taken, but rather in their indecisive reunion delay’– a delay in glass as you would say a poem in prose or a spittoon in silver

Marcel Duchamp: The Green Box, 1934

The Delay of the Gift