《汉书·传·眭两夏侯京翼李传》
臣听老师说，天地定位，上悬曰月，布列星辰，划分阴阳，确定四时，排列五行，这些是给圣人看的，如果给一个名称就叫做道。
臣闻之于师曰，天地设位，悬日月，布星辰，分阴阳，定四时，列五行，以视圣人，名之曰道。
I heard my teacher say that heaven and earth have their positions, the sun and moon hang in the sky, the stars are laid out, yin and yang are divided, the four seasons are determined, and the five elements are arranged. This is for the saint to see, if give it a name it is called the Way.