Thirty spokes meet in the hub,_x000D_ _x000D_ but the empty space between them_x000D_ _x000D_ is the essence of the wheel._x000D_ _x000D_ _x000D_ Pots are formed from clay,_x000D_ _x000D_ but the empty space within it_x000D_ _x000D_ is the essence of the pot._x000D_ _x000D_ _x000D_ Walls with windows and doors_x000D_ _x000D_ form the house,_x000D_ _x000D_ but the empty space within it_x000D_ _x000D_ is the essence of the home.
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