Luther and Lewis

Oh, how simple and pure a heart was hers, how strange a soul was this! What great things are hidden here under this lowly exterior! How many came in contact with her, talked and ate and drank with her, who perhaps despised her and counter her but a common, poor, and simple village maiden, and who, had they known, would have fled from her in terror.—Martin Luther, Magnificat, AE 21:329.

The proper question is whether I believe in devils. I do. That is to say, I believe in angels and I believe that some of these, by the abuse of their free will, have become enemies to God and, as a corollary, to us. These we may call devils.—C. S. Lewis, Business of Heaven, p. 236.