Lady, how can it chance--yet this we see
In long experience--that will longer last
A living image carved from quarries vast
Than its own maker, who dies presently?
Cause yieldeth to effect if this so be,
And even Nature is by Art at surpassed;
This know I, who to Art have given the past,
But see that Time is breaking faith with me.
Perhaps on both of us long life can I
Either in color or in stone bestow,
By now portraying each in look and mien;
So that a thousand years after we die,
How fair thou wast, and I how full of woe,
And wherefore I so loved thee, may be seen.

Henry Wadsworth Longfellow

http://www.poemhunter.com/poem/to-vittoria-colonna-sonnet-v/