A quote
There have been found persons who crave something more after obtaining everything; so blind are their wits and so readily does each man forget his start after he has got under way. He who was but lately the disputed lord of an unknown corner of the world, is dejected when, after reaching the limits of the globe, he must march back through a world which he has made his own.
Seneca·Letter 119 — On Nature as Our Best Provider (§8)·trans. Gummere