Celestial Navigation

Nor when expandingly lifted by your subject, can you fail to trace out great whales in the starry heavens, and boats in pursuit of them; as when long filled with thoughts of war the Eastern nations saw armies locked in battle among the clouds. Thus at the North have I chased Leviathan round and round the Pole with the revolutions of the bright points that first defined him to me. And beneath the effulgent Antarctic skies I have boarded the Argo-Navis, and joined the chase against the starry Cetus far beyond the utmost stretch of Hydrus and the Flying Fish.