Nicene and Post-Nicene Fathers: Series II/Volume XI/John Cassian/Conferences of John Cassian, Part I/Conference II/Chapter 17

Chapter XVII.

On excessive fasts and vigils.

I remember that I had so often resisted the desire for food, that having abstained from taking any for two or three days, my mind was not troubled even by the recollection of any eatables and also that sleep was by the assaults of the devil so far removed from my eyes, that for several days and nights I used to pray the Lord to grant a little sleep to my eyes; and then I felt that I was in greater peril from the want of food and sleep than from struggling against sloth and gluttony. And so as we ought to be careful not to fall into dangerous effeminacy through desire for bodily gratification, nor indulge ourselves with eating before the right time nor take too much, so also we ought to refresh ourselves with food and sleep at the proper time even if we dislike it. For the struggle in each case is caused by the devices of the enemy; and excessive abstinence is still more injurious to us than careless satiety: for from this latter the intervention of a healthy compunction will raise us to the right measure of strictness, and not from the former.