Did you ever notice that all machines are made for some reason? … They are built to make you laugh, like the mouse here, or to tell the time, like clocks, or to fill you with wonder like the automaton. Maybe that's why a broken machine always makes me a little sad, because it isn't able to do what it was meant to do. … Maybe it's the same with people: if you lose your purpose, it's like you're broken.

Brian Selznick