He who has more than enough and yet hungers for still more will find no remedy in gold or silver or horses and sheep and cattle, but in casting out the source of mischief and being purged. For his ailment is not poverty, but insatiability and avarice, arising from the presence in him of a false and unreflecting judgment; and unless someone removes this, like a tapeworm, from his mind, he will never cease to need superfluities – that is, to want what he does not need. Plutarch, On Love of Wealth 3 (524c–d)