V.vi.13. Syncletica of blessed memory was asked whether owning nothing was the highest perfection. She replied, “It is indeed a very good thing for those who can. For if you are able to put up with it you may experience bodily discomfort but you will have peace of mind. Just as clothing of good quality is laundered and restored to whiteness by being trampled on and turned over and over again underfoot, so is a strong person made stronger by voluntary poverty.”
From: DE VITIS PATRUM, BOOK V, LIBELLUS 6: A Monk should not possess anything.