Mahomet can work no miracles; he often answers impatiently: I can work no miracles. I? "I am a Public Preacher;" appointed to preach this doctrine to all creatures. Yet the world, as we can see, had really from of old been all one great miracle to him. Look over the world, says he; is it not wonderful, the work of Allah; wholly "a sign to you," if your eyes were open!

Heroes and Hero-Worship (1840) - The Hero as Prophet