The Enchiridion, Section 39 — In Plain English

Epictetus — The Slave

Your body sets the proper limit for what you need to own, just like your foot sets the limit for your shoe size. If you stick to this natural limit, you'll stay balanced. But if you go beyond it, you'll get carried away like falling off a cliff. Think about shoes: once they stop being about fitting your foot, they become gold-plated, then purple, then covered in jewels. Once you abandon the proper measure, there's no stopping point.

Epictetus — The Slave Original

The body is to everyone the proper measure of its possessions, as the foot is of the shoe. If, therefore, you stop at this, you will keep the measure; but if you move beyond it, you must necessarily be carried forward, as down a precipice; as in the case of a shoe, if you go beyond its fitness to the foot, it comes first to be gilded, then purple, and then studded with jewels. For to that which once exceeds the fit measure there is no bound.