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This speaks to Christopher's spiritual existence - seeing himself in relation to the universe. He says that he wants to be an astronaut, and his respect and admiration for the universe is clearly deep seated. This is his escape from the world as we know it, full of man-made commodities. We know that he does not accept the way everyone else sees the world, and this is his connection with something he utterly admires and feel connected to: a logical mathematical world that functions because of the detailed precision of its genius.