"Many of the things that bring delight should not be owned. They are more enjoyed if another's, than if yours; the first day they give pleasure to the owner, but in all the rest to the others: what belongs to another rejoices doubly, because it is without the risk of going stale and with the satisfaction of freshness. . . the possession of things not only diminishes their enjoyment, but augments their annoyance, whether shared or not shared."