The measure of possession (property) is to every man the body, as the foot is of the shoe. If then you stand on this rule (the demands of the body), you will maintain the measure: but if you pass beyond it, you must then of necessity be hurried as it were down a precipice. As also in the matter of the shoe, if you go beyond the (necessities of the) foot, the shoe is gilded, then of a purple color, then embroidered: for there is no limit to that which has once passed the true measure.
Epictetus – Enchiridion XXXIX
Happiness isn’t having more, but needing less.
He who knows he has enough, is rich