“Whether the sun, predominant in heaven, Rise on the earth, or earth rise on the sun; He from the east his flaming road begin, Or she from west her silent course advance, With inoffensive pace that spinning sleeps On her soft axle; while she paces even, And bears thee soft with the smooth air along; Solicit not thy thoughts with matters hid.”

Thus, taking the earth as the central point, and speaking of the order of the Ten Heavens, Dante says, Convito , II 4:⁠—