Biel had accepted Peter Lombard's view that original sin involved a fundamentally disordered desire instead of the definition held by St. Augustine, St. Anselm and St. Thomas Aquinas that original sin is rooted in privation of grace, and does not fundamentallycorrupt our nature. (faith.org.uk)
The Cure of Ars (no stranger to mortification) says, «Fasting does not consist solely of privations in the way of eating and drinking but of denying ourselves what pleases us most.» (faith.org.uk)
This suggested that they were suffering from privation, rather than deprivation, which Rutter suggested was far more deleterious to the children. (simplypsychology.org)