Fifth prior of the Grande Chartreuse, he set down the customs of the house, which became the Carthusian rule. He also kept a notebook of brief notes, addressed to no one, in which he speaks to himself without sparing himself, and in which the body, hunger, cold and illness keep returning.
In their own words
See how you are as if at war: thirst burns you, you set drink against it; hunger torments you, you set food against it; against cold, clothing or a fire; against sickness, medicine. Against all of this, patience is needed, and contempt for the world, lest you be overcome by another war that rises from it, the war of the throngs of vices.
Meditations, ch. XIV, De adversitatibus hujus saeculi; Latin « Vide quomodo sis quasi in bello : sitis torret, opponis potum ; fames cruciat, opponis escas ; frigori, vestem aut ignem ; morbis, medicinam. Contra haec omnia opus est patientia, et mundi contemptu, ne alio bello, quod hinc surgit, supereris, catervis videlicet vitiorum », in Patrologia Latina, vol. 153, cols. 621-622, ed. J.-P. Migne, Paris, 1854; translated by the Manna team