Let us accustom ourselves to eat so much only as will sustain our higher life, and not hinder and oppress it. For it was not for this that we were born, and exist—namely, that we should eat and drink; but let us eat for this—namely, that we may live. It was not given us at first to live for the sake of eating, but to eat for the sake of living. But we, as if we had come into the world merely to eat, upon this we spend everything.
—St. John Chrysostom, On Wealth and Poverty