6. For as the ground is defined by stated distances for those who run in hope of obtaining the prize; and as the road of those who travel on a distant journey is marked by resting-places and measured intervals, that the traveler’s courage may not fail at the interminable prospect; even so the Sovereign of the universe, controlling eternity itself within the restraining power of his own wisdom, directs and turns its course as he judges best. The same God, I say, who thus clothes the once undefined eternity as with fair colors and blooming flowers, gladdens the day with the solar rays; and, while he overspreads the night with a covering of darkness, yet causes the glittering stars, as golden spangles, to shine therein. It is he who lights up the brilliancy of the morning star, the changing splendor of the moon, and the glorious companies of the starry host, and has arrayed the expanse of heaven, like some vast mantle, in colors of varied beauty. Again, having created the lofty and profound expanse of air, and caused the world in its length and breadth to feel its cooling influence, he decreed that the air itself should be graced with birds of every kind, and left open this vast ocean of space to be traversed by every creature, visible or invisible, whose course is through the tracts of heaven. In the midst of this atmosphere he poised the earth, as it were its center, and encompassed it with the ocean as with a beautiful azure vesture.