From the essay:
The responsibility of the artist is to make visible the very small thing that has been given, particularly, to that artist. We should expect that it will look like nothing given to any other artist that has come before (Christ is that big). It is the job of the artist to make it visible. It is the job of the critic to see it and fumble toward the best expression of it that he or she can. Beyond that there is nothing we can do: goodness and beauty will take care of themselves. They will be perceived when the truth is perceived. And greatness – that is not our business. We should neither desire it nor demand it.
Read the essay at Dappled Things.