A Hetalia Diaries entry by Kita Inoru: "This is just a quick run-down of the history behind American exceptionalism, and the metaphor of America being a "City upon a Hill" that fueled it. That particular image comes from Christian scripture: "Ye are the light of the world. A city that is set on an hill cannot be hid” (Matthew 5:14). I see this as the root of Alfred's heroic complex (i.e. "I'm the hero!"), since he believes he has the God-given responsibility to live up to the ideal."