Chapter XVII.
On excessive fasts and vigils.
For 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.
Chapter XVIII.
A question on the right measure of abstinence and refreshment.
Germanus: What then is the measure of abstinence by keeping which with even balance we shall succeed in passing unharmed between the two extremes?
Chapter XIX.
Of the best plan for our daily food.
Moses: On this matter we are aware that there have been frequent discussions among our Elders. For in discussing the abstinence of some who supported their lives continually on nothing but beans or only on vegetables and fruits, they proposed to all of them to partake of bread alone, the right measure of which they fixed at two biscuits, so small that they assuredly scarcely weighed a pound.
Chapter XX.
An objection on the ease of that abstinence in which a man is sustained by two biscuits.
And this we gladly embraced, and answered that we should scarcely consider this limit as abstinence, as we could not possibly reach it entirely.
Chapter XXI.
The answer concerning the value and measure of well-proved abstinence.
Moses: If you want to test the force of this rule, keep to this limit continually, never departing from it by taking any cooked food even on Sunday or Saturday, or on the occasions of the arrival of any of the brethren; for the flesh, refreshed by these exceptions, is able not only to support itself through the rest of the week on a smaller quantity, but can also postpone all refreshment without difficulty, as it is sustained by the addition of that food which it has taken beyond the limit; while the man who has always been satisfied with the full amount of the above-mentioned measure will never be able to do this, nor to put off breaking his fast till the morrow. For I remember that our Elders (and I recollect that we ourselves also often had the same experience) found it so hard and difficult to practise this abstinence, and observed the rule laid down with such pain and hunger that it was almost against their will and with tears and lamentation that they set this limit to their meals.
Chapter XXII.
What is the usual limit both of abstinence and of partaking food.
But this is the usual limit of abstinence; viz., for everyone to allow himself food according to the requirements of his strength or bodily frame or age, in such quantity as is required for the support of the flesh, and not for the satisfactory feeling of repletion. For on both sides a man will suffer the greatest injury, if having no fixed rule at one time he pinches his stomach with meagre food and fasts, and at another stuffs it by over-eating himself; for as the mind which is enfeebled for lack of food loses vigour in praying, while it is worn out with excessive weakness of the flesh and forced to doze, so again when weighed down with over-eating it cannot pour forth to God pure and free prayers: nor will it succeed in preserving uninterruptedly the purity of its chastity, while even on those days on which it seems to chastise the flesh with severer abstinence, it feeds the fire of carnal desire with the fuel of the food that it has already taken.