Humility.

There are those who maintain that you can’t demand anything of the reader. They say the reader knows nothing about art, and that if you are going to reach him, you have to be humble enough to descend to his level. This supposes either that the aim of art is to teach, which it is not, or that to create anything which is simply a good-in-itself is a waste of time. Art never responds to the wish to make it democratic; it is not for everybody; it is only for those who are willing to undergo the effort needed to understand it. We hear a great deal about humility being required to lower oneself, but it requires an equal humility and a real love of the truth to raise oneself and by hard labor to acquire higher standards. Ignorance is excusable when it is borne like a cross, but when it is wielded like an ax, and with moral indignation, then it becomes something else indeed.

Flannery O'Connor