Of Fasting

An act that is virtuous generically may be rendered vicious by its connection with certain circumstances. Hence the text goes on to say: "Behold in the day of your fast your own will is founded," and a little further on (Isa. 58:4): "You fast for debates and strife and strike with the fist wickedly." These words are expounded by Gregory (Pastor. iii, 19) as follows: "The will indicates joy and the fist anger. In vain then is the flesh restrained if the mind allowed to drift to inordinate movements be wrecked by vice." And Augustine says (in the same sermon) that "fasting loves not many words, deems wealth superfluous, scorns pride, commends humility, helps man to perceive what is frail and paltry."

The mean of virtue is measured not according to quantity but according to right reason, as stated in Ethic. ii, 6. Now reason judges it expedient, on account of some special motive, for a man to take less food than would be becoming to him under ordinary circumstances, for instance in order to avoid sickness, or in order to perform certain bodily works with greater ease: and much more does reason direct this to the avoidance of spiritual evils and the pursuit of spiritual goods. Yet reason does not retrench so much from one's food as to refuse nature its necessary support: thus Jerome says:* "It matters not whether thou art a long or a short time in destroying thyself, since to afflict the body immoderately, whether by excessive lack of nourishment, or by eating or sleeping too little, is to offer a sacrifice of stolen goods." [The quotation is from the Corpus of Canon Law (Cap. Non mediocriter, De Consecrationibus, dist. 5). Gratian there ascribes the quotation to St. Jerome, but it is not to be found in the saint's works.] In like manner right reason does not retrench so much from a man's food as to render him incapable of fulfilling his duty. Hence Jerome says (in the same reference) "Rational man forfeits his dignity, if he sets fasting before chastity, or night-watchings before the well-being of his senses."

The fasting of nature, in respect of which a man is said to be fasting until he partakes of food, consists in a pure negation, wherefore it cannot be reckoned a virtuous act. Such is only the fasting of one who abstains in some measure from food for a reasonable purpose. Hence the former is called natural fasting (jejunium jejunii) [Literally the 'fast of fasting']: while the latter is called the faster's fast, because he fasts for a purpose.

Properly speaking fasting consists in abstaining from food, but speaking metaphorically it denotes abstinence from anything harmful, and such especially is sin.

We may also reply that even properly speaking fasting is abstinence from all manner of lust, since, as stated above (A. 1, ad 1), an act ceases to be virtuous by the conjunction of any vice.

Nothing prevents the act of one virtue belonging to another virtue, in so far as it is directed to the end of that virtue, as explained above (Q. 32, A. 1, ad 2; Q. 85, A. 3). Accordingly there is no reason why fasting should not be an act of religion, or of chastity, or of any other virtue.

It belongs to fortitude as a special virtue, to endure, not any kind of hardship, but only those connected with the danger of death. To endure hardships resulting from privation of pleasure of touch, belongs to temperance and its parts: and such are the hardships of fasting.

Fasting considered in itself denotes something not eligible but penal: yet it becomes eligible in so far as it is useful to some end. Wherefore considered absolutely it is not binding under precept, but it is binding under precept to each one that stands in need of such a remedy. And since men, for the most part, need this remedy, both because "in many things we all offend" (James 3:2), and because "the flesh lusteth against the spirit" (Gal. 5:17), it was fitting that the Church should appoint certain fasts to be kept by all in common. In doing this the Church does not make a precept of a matter of supererogation, but particularizes in detail that which is of general obligation.

Those commandments which are given under the form of a general precept, do not bind all persons in the same way, but subject to the requirements of the end intended by the lawgiver. It will be a mortal sin to disobey a commandment through contempt of the lawgiver's authority, or to disobey it in such a way as to frustrate the end intended by him: but it is not a mortal sin if one fails to keep a commandment, when there is a reasonable motive, and especially if the lawgiver would not insist on its observance if he were present. Hence it is that not all, who do not keep the fasts of the Church, sin mortally.

Augustine is speaking there of those things "that are neither contained in the authorities of Holy Scripture, nor found among the ordinances of bishops in council, nor sanctioned by the custom of the universal Church." On the other hand, the fasts that are of obligation are appointed by the councils of bishops and are sanctioned by the custom of the universal Church. Nor are they opposed to the freedom of the faithful, rather are they of use in hindering the slavery of sin, which is opposed to spiritual freedom, of which it is written (Gal. 5:13): "You, brethren, have been called unto liberty; only make not liberty an occasion to the flesh."

The commandments of God are precepts of the natural law, which are, of themselves, necessary for salvation. But the commandments of the Church are about matters which are necessary for salvation, not of themselves, but only through the ordinance of the Church. Hence there may be certain obstacles on account of which certain persons are not bound to keep the fasts in question.

In children there is a most evident reason for not fasting, both on account of their natural weakness, owing to which they need to take food frequently, and not much at a time, and because they need much nourishment owing to the demands of growth, which results from the residuum of nourishment. Wherefore as long as the stage of growth lasts, which as a rule lasts until they have completed the third period of seven years, they are not bound to keep the Church fasts: and yet it is fitting that even during that time they should exercise themselves in fasting, more or less, in accordance with their age. Nevertheless when some great calamity threatens, even children are commanded to fast, in sign of more severe penance, according to Jonah 3:7, "Let neither men nor beasts . . . taste anything . . . nor drink water."

Apparently a distinction should be made with regard to pilgrims and working people. For if the pilgrimage or laborious work can be conveniently deferred or lessened without detriment to the bodily health and such external conditions as are necessary for the upkeep of bodily or spiritual life, there is no reason for omitting the fasts of the Church. But if one be under the necessity of starting on the pilgrimage at once, and of making long stages, or of doing much work, either for one's bodily livelihood, or for some need of the spiritual life, and it be impossible at the same time to keep the fasts of the Church, one is not bound to fast: because in ordering fasts the Church would not seem to have intended to prevent other pious and more necessary undertakings. Nevertheless, in such cases one ought seemingly, to seek the superior's dispensation; except perhaps when the above course is recognized by custom, since when superiors are silent they would seem to consent.

Those poor who can provide themselves with sufficient for one meal are not excused, on account of poverty, from keeping the fasts of the Church. On the other hand, those would seem to be exempt who beg their food piecemeal, since they are unable at any one time to have a sufficiency of food.

This saying of our Lord may be expounded in three ways. First, according to Chrysostom (Hom. xxx in Matth.), who says that "the disciples, who are called children of the bridegroom, were as yet of a weakly disposition, wherefore they are compared to an old garment." Hence while Christ was with them in body they were to be fostered with kindness rather than drilled with the harshness of fasting. According to this interpretation, it is fitting that dispensations should be granted to the imperfect and to beginners, rather than to the elders and the perfect, according to a gloss on Ps. 130:2, "As a child that is weaned is towards his mother." Secondly, we may say with Jerome [Bede, Comment. in Luc. v] that our Lord is speaking here of the fasts of the observances of the Old Law. Wherefore our Lord means to say that the apostles were not to be held back by the old observances, since they were to be filled with the newness of grace. Thirdly, according to Augustine (De Consensu Evang. ii, 27), who states that fasting is of two kinds. One pertains to those who are humbled by disquietude, and this is not befitting perfect men, for they are called "children of the bridegroom"; hence when we read in Luke: "The children of the bridegroom cannot fast [Hom. xiii, in Matth.]," we read in Matt. 9:15: "The children of the bridegroom cannot mourn [Vulg.: 'Can the children of the bridegroom mourn?']." The other pertains to the mind that rejoices in adhering to spiritual things: and this fasting is befitting the perfect.

Christ needed not baptism for His own sake, but in order to commend baptism to us. Wherefore it was competent for Him to fast, not before, but after His baptism, in order to invite us to fast before our baptism.

The Church keeps the Ember fasts, neither at the very same time as the Jews, nor for the same reasons. For they fasted in July, which is the fourth month from April (which they count as the first), because it was then that Moses coming down from Mount Sinai broke the tables of the Law (Ex. 32), and that, according to Jer. 39:2, "the walls of the city were first broken through." In the fifth month, which we call August, they fasted because they were commanded not to go up on to the mountain, when the people had rebelled on account of the spies (Num. 14): also in this month the temple of Jerusalem was burnt down by Nabuchodonosor (Jer. 52) and afterwards by Titus. In the seventh month which we call October, Godolias was slain, and the remnants of the people were dispersed (Jer. 51). In the tenth month, which we call January, the people who were with Ezechiel in captivity heard of the destruction of the temple (Ezech. 4).

The "fasting of joy" proceeds from the instigation of the Holy Ghost Who is the Spirit of liberty, wherefore this fasting should not be a matter of precept. Accordingly the fasts appointed by the commandment of the Church are rather "fasts of sorrow" which are inconsistent with days of joy. For this reason fasting is not ordered by the Church during the whole of the Paschal season, nor on Sundays: and if anyone were to fast at these times in contradiction to the custom of Christian people, which as Augustine declares (Ep. xxxvi) "is to be considered as law," or even through some erroneous opinion (thus the Manichees fast, because they deem such fasting to be of obligation)—he would not be free from sin. Nevertheless fasting considered in itself is commendable at all times; thus Jerome wrote (Ad Lucin., Ep. lxxi): "Would that we might fast always."

It was not possible to fix the same quantity of food for all, on account of the various bodily temperaments, the result being that one person needs more, and another less food: whereas, for the most part, all are able to satisfy nature by only one meal.

Fasting is of two kinds [Cf. A. 1, ad 3]. One is the natural fast, which is requisite for receiving the Eucharist. This is broken by any kind of drink, even of water, after which it is not lawful to receive the Eucharist. The fast of the Church is another kind and is called the "fasting of the faster," and this is not broken save by such things as the Church intended to forbid in instituting the fast. Now the Church does not intend to command abstinence from drink, for this is taken more for bodily refreshment, and digestion of the food consumed, although it nourishes somewhat. It is, however, possible to sin and lose the merit of fasting, by partaking of too much drink: as also by eating immoderately at one meal.

Although digestives nourish somewhat they are not taken chiefly for nourishment, but for digestion. Hence one does not break one's fast by taking them or any other medicines, unless one were to take digestives, with a fraudulent intention, in great quantity and by way of food.

The state of the Old Testament is compared to the night, while the state of the New Testament is compared to the day, according to Rom. 13:12, "The night is passed and the day is at hand." Therefore in the Old Testament they fasted until night, but not in the New Testament.

Fasting requires a fixed hour based, not on a strict calculation, but on a rough estimate: for it suffices that it be about the ninth hour, and this is easy for anyone to ascertain.

A little more or a little less cannot do much harm. Now it is not a long space of time from the sixth hour at which men for the most part are wont to eat, until the ninth hour, which is fixed for those who fast. Wherefore the fixing of such a time cannot do much harm to anyone, whatever his circumstances may be. If however this were to prove a heavy burden to a man on account of sickness, age, or some similar reason, he should be dispensed from fasting, or be allowed to forestall the hour by a little.

Three things concur in the act of procreation, namely, heat, spirit [Cf. P. I., Q. 118, A. 1, ad 3], and humor. Wine and other things that heat the body conduce especially to heat: flatulent foods seemingly cooperate in the production of the vital spirit: but it is chiefly the use of flesh meat which is most productive of nourishment, that conduces to the production of humor. Now the alteration occasioned by heat, and the increase in vital spirits are of short duration, whereas the substance of the humor remains a long time. Hence those who fast are forbidden the use of flesh meat rather than of wine or vegetables which are flatulent foods.

In the institution of fasting, the Church takes account of the more common occurrences. Now, generally speaking, eating flesh meat affords more pleasure than eating fish, although this is not always the case. Hence the Church forbade those who fast to eat flesh meat, rather than to eat fish.

Eggs and milk foods are forbidden to those who fast, for as much as they originate from animals that provide us with flesh: wherefore the prohibition of flesh meat takes precedence of the prohibition of eggs and milk foods. Again the Lenten fast is the most solemn of all, both because it is kept in imitation of Christ, and because it disposes us to celebrate devoutly the mysteries of our redemption. For this reason the eating of flesh meat is forbidden in every fast, while the Lenten fast lays a general prohibition even on eggs and milk foods. As to the use of the latter things in other fasts the custom varies among different people, and each person is bound to conform to that custom which is in vogue with those among whom he is dwelling. Hence Jerome says [Augustine, De Lib. Arb. iii, 18; cf. De Nat. et Grat. lxvii]: "Let each province keep to its own practice, and look upon the commands of the elders as though they were the laws of the apostles."