T.S. Eliot, in his essay ‘Religion and Literature’, written in 1935:
It is our business, as readers of literature, to know what we like. It is our business, as Christians, as well as readers of literature, to know what we ought to like. It is our business as honest men not to assume that whatever we like is what we ought to like; and it is our business as honest Christians not to assume that we do like what we ought to like. And the last thing I would wish for would be the existence of two literatures, one for Christian consumption and the other for the pagan world.
Hat tip to my colleague Alissa Wilkinson.