(Happiness) belongs more to those who have cultivated their character and mind to the uttermost, and kept acquisition of external goods within moderate limits, than it does to those who have managed to acquire more external goods than they can possibly use, and are lacking goods of the soul . . . Any excessive amount of such things must either cause its possessor some injury, or, at any rate, bring him no benefit.
Excerpt from The Politics of Aristotle (1958 translation) by Aristotle