Flannery O'Connor

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.

-Flannery O'Connor, The Fiction Writer & His Country