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Just as a stone flung into the water becomes the centre and cause of many circles, and as sound diffuses itself in circles in the air; so any object, placed in the luminous atmosphere, diffuses itself in circles, and fills the surrounding air with infinite images of itself.

就像一块扔进水里的石头变成了许多圆圈的中心和原因，就像声音在空中以圆圈的形式扩散;因此，任何物体，只要放在明亮的大气中，就会以圆圈的形式扩散，并在周围的空气中充满无限的自身形象。

— Leonardo di ser Piero da Vinci 达芬奇爵士