Out, out, brief candle!
Life's but a walking shadow,
Shakespeare, The tragedy of Macbeth, Scene V
The greatest enemy to contemporary art is contemporary art itself
Dante, "life" means "death". If sceptical life meaning death look for "life insurance" with your search browser.
I think that museums today are conserving not only art objects, but the purpose of the art. If your project is to be a post-Jasper Johns version of Marcel Duchamp, there is a frog in your art project because avant-garde is more being pre-something than post-everything.
People die, but art never dies
Ephemeral Valentine will destroy immortal art