XIX. After this comes the discipline of the flesh, to kill its gross, evil lust, to give it rest and relief. This we must kill and quiet with fasting, watching and labor, and from this we learn how much and why we shall fast, watch and labor. There are, alas! many blind men, who practise their castigation, whether it be fasting, watching or labor, only because they think these are good works, intending by them to gain much merit. Far blinder still are they who measure their fasting not only by the quantity or duration, as these do, but also by the nature of the food, thinking that it is of far greater worth if they do not eat meat, eggs or butter. Beyond these are those who fast according to the saints, and according to the days; one fasting on Wednesday, another on Saturday, another on St. Barbara's day, another on St. Sebastian's day,[34] and so on. These all seek in their fasting nothing beyond the work itself: when they have performed that, they think they have done a good work. I will here say nothing of the fact that some fast in such a way that they none the less drink themselves full; some fast by eating fish and other foods so lavishly that they would come much nearer to fasting if they ate meat, eggs and butter, and by so doing would obtain far better results from their fasting. For such fasting is not fasting, but a mockery of fasting and of God. Therefore I allow everyone to choose his day, food and quantity for fasting, as he will, on condition that he do not stop with that, but have regard to his flesh; let him put upon it fasting, watching and labor according to its lust and wantonness, and no more, although pope, Church, bishop, father-confessor or any one else whosoever have commanded it. For no one should measure and regulate fasting, watching and labor according to the character or quantity of the food, or according to the days, but according to the withdrawal or approach of the lust and wantonness of the flesh, for the sake of which alone the fasting, watching and labor is ordained, that is, to kill and to subdue them. If it were not for this lust, eating were as meritorious as fasting, sleeping as watching, idleness as labor, and each were as good as the other without all distinction. [Sidenote: The Limitation of Fasting]