I find some writers who declare that mankind has a natural itch for change of abode and alteration of domicile: for the mind of man is wandering and unquiet; it never stands still, but spreads itself abroad and sends forth its thoughts into all regions, known or unknown; being nomadic, impatient of repose, and loving novelty beyond everything else. You need not be surprised at this, if you reflect upon its original source: it is not formed from the same elements as the heavy and earthly body, but from heavenly spirit: now heavenly things are by their nature always in motion, speeding along and flying with the greatest swiftness. Look at the luminaries which light the world: none of them stands still. The sun is perpetually in motion, and passes from one quarter to another, and although he revolves with the entire heaven, yet nevertheless he has a motion in the contrary direction to that of the universe itself, and passes through all the constellations without remaining in any: his wandering is incessant, and he never ceases to move from place to place.