Paper is used to symbolise human power. Receipts can fly our lives like paper kites, but they’re fragile and easily destroyed hinting at its permanent, paper, maps, show, borderline and other man-made features, but the Sun shines through the wall alluding to natures enduring power.
In the eight stand are the speaker talks about letting daylight break through capitals and monoliths. This is an image of a natural power being greater than human power. The capitals and monoliths represent human governments and buildings, but they are temporary compared to nature.