“I find nothing that promotes work better than angry fervor. For when I wish to compose, write, pray and preach well, I must be angry. It refreshes my entire system, my mind is sharpened, and all unpleasant thoughts and depression fade away.”
–Martin Luther, Off the Record With Martin Luther: An Original Translation of the Table Talks, trans. and ed. Charles Daudert (Kalamazoo, MI: Hansa-Hewlett, 2009), entry no. 2410b, p. 110.