My own feeling is that writers who see by the light of their Christian faith will have, in these times, the sharpest eyes for the grotesque, for the perverse, and for the unacceptable. In some cases, these writers may be unconsciously infected with the Manichaean spirit of the times and suffer the much-discussed disjunction between sensibility and belief, but I think that more often the reason for this attention to the perverse is the difference between their beliefs and the beliefs of their audience. Redemption is meaningless unless there is case for it in the actual life we live, and for the last few centuries there has been operating in our culture the secular belief that there is no such cause.
The novelist with Christian concerns will find in modern life distortions which are repugnant to him, and his problem will be to make these appear as distortions to an audience which is used to seeing them as natural; and he may well be forced to take ever more violent means to get his vision across to this hostile audience. When you can assume that your audience holds the same beliefs as you do, you can relax a little and use more normal means of talking to it; when you have to assume that it does not, then you have to make your vision apparent by shock, to the hard of hearing you shout, and for the almost-blind, you draw large and startling figures.
—Mystery and Manners: Occasional Prose (New York: Farrar, Straus and Giroux, 1969) pp. 33-34 [my emphasis]