The Screwtape Letters

Ideally, Screwtape’s advice to Wormwood should have been balanced by archangelical advice to the patient’s guardian angel. Without this the picture of human life is lopsided. But who could supply the deficiency? Even if a man—and he would have to be a far better man than I—could scale the spiritual heights required, what ‘answerable style’ could he use? For the style would really be part of the content. Mere advice would be no good; every sentence would have to smell of Heaven.

—C.S. Lewis, Second Preface to The Screwtape Letters.