"You ask me what I shall do if I am called by the emperor. I will go even if I am too sick to stand on my feet. If Caesar calls me, God calls me. If violence is used, as well it may be, I commend my cause to God. He lives and reigns who saved the three youths from the fiery furnace of the king of Babylon. And if he will not save me, my head is worth nothing compared with Christ. This is no time to think of safety. I must take care that the gospel is not brought into contempt by our fear to confess and seal our teaching with our blood."
Martin Luther, quoted in Roland Bainton, Here I Stand: A Life of Martin Luther, page 174.