We eat until we aren’t hungry, and the same thing that was satisfying yesterday can be satisfying today. Other desires, such as the wish for status, are produced by social life, or are created by stimulating the appetite for things we don’t need. Desires of this artificial kind are never quite satisfied; their fulfillment isn’t as pleasing as we imagined, and newer and bigger objects of them must always be sought. And because they aren’t linked to a particular need, they have no natural stopping place.
