I answer that, As stated above (Q[101], A[2], ad 2) when we were treating of piety, parents as such have the character of a principle, wherefore it is competent to them as such to have the care of their children. Hence it is unlawful for a person having children to enter religion so as altogether to set aside the care for their children, namely without providing for their education. For it is written ( 1 Tim. 5:8 ) that "if any man have not care of his own . . . he hath denied the faith, and is worse than an infidel."
Nevertheless it is accidentally competent to parents to be assisted by their children, in so far, to wit, as they are placed in a condition of necessity. Consequently we must say that when their parents are in such need that they cannot fittingly be supported otherwise than by the help of their children, these latter may not lawfully enter religion in despite of their duty to their parents. If, however, the parents' necessity be not such as to stand in great need of their children's assistance, the latter may, in despite of the duty they owe their parents, enter religion even against their parents' command, because after the age of puberty every freeman enjoys freedom in things concerning the ordering of his state of life, especially in such as belong to the service of God, and "we should more obey the Father of spirits that we may live [*'Shall we not much more obey the Father of Spirits, and live?']," as says the Apostle ( Heb. 12:9 ), than obey our parents. Hence as we read ( Mat. 8:22 ; Lk. 9:62 ) our Lord rebuked the disciple who was unwilling to follow him forthwith on account of his father's burial: for there were others who could see to this, as Chrysostom remarks [*Hom. xxvii in Matth.].
Reply to Objection 1: The commandment of honoring our parents extends not only to bodily but also to spiritual service, and to the paying of deference. Hence even those who are in religion can fulfil the commandment of honoring their parents, by praying for them and by revering and assisting them, as becomes religious, since even those who live in the world honor their parents in different ways as befits their condition.
Reply to Objection 2: Since slavery was imposed in punishment of sin, it follows that by slavery man forfeits something which otherwise he would be competent to have, namely the free disposal of his person, for "a slave belongs wholly to his master" [*Aristotle, Polit. i, 2]. On the other hand, the son, through being subject to his father, is not hindered from freely disposing of his person by transferring himself to the service of God; which is most conducive to man's good.
Reply to Objection 3: He who is under a certain fixed obligation cannot lawfully set it aside so long as he is able to fulfil it. Wherefore if a person is under an obligation to give an account to someone or to pay a certain fixed debt, he cannot lawfully evade this obligation in order to enter religion. If, however, he owes a sum of money, and has not wherewithal to pay the debt, he must do what he can, namely by surrendering his goods to his creditor. According to civil law [*Cod. IV, x, de Oblig. et Action, 12] money lays an obligation not on the person of a freeman, but on his property, because the person of a freeman "is above all pecuniary consideration" [*Dig. L, xvii, de div. reg. Jur. ant. 106,176]. Hence, after surrendering his property, he may lawfully enter religion, nor is he bound to remain in the world in order to earn the means of paying the debt.
On the other hand, he does not owe his father a special debt, except as may arise in a case of necessity, as stated above.
Whether parish priests may lawfully enter religion?
Objection 1: It would seem that parish priests cannot lawfully enter religion. For Gregory says (Past. iii, 4) that "he who undertakes the cure of souls, receives an awful warning in the words: 'My son, if thou be surety for thy friend, thou hast engaged fast thy hand to a stranger'" ( Prov. 6:1 ); and he goes on to say, "because to be surety for a friend is to take charge of the soul of another on the surety of one's own behavior." Now he who is under an obligation to a man for a debt, cannot enter religion, unless he pay what he owes, if he can. Since then a priest is able to fulfil the cure of souls, to which obligation he has pledged his soul, it would seem unlawful for him to lay aside the cure of souls in order to enter religion.
Objection 2: Further, what is lawful to one is likewise lawful to all. But if all priests having cure of souls were to enter religion, the people would be left without a pastor's care, which would be unfitting. Therefore it seems that parish priests cannot lawfully enter religion.
Objection 3: Further, chief among the acts to which religious orders are directed are those whereby a man gives to others the fruit of his contemplation. Now such acts are competent to parish priests and archdeacons, whom it becomes by virtue of their office to preach and hear confessions. Therefore it would seem unlawful for a parish priest or archdeacon to pass over to religion.
On the contrary, It is said in the Decretals (XIX, qu. ii, cap. Duce sunt leges.): "If a man, while governing the people in his church under the bishop and leading a secular life, is inspired by the Holy Ghost to desire to work out his salvation in a monastery or under some canonical rule, even though his bishop withstand him, we authorize him to go freely."
I answer that, As stated above (A[3], ad 3; Q[88], A[12], ad 1), the obligation of a perpetual vow stands before every other obligation. Now it belongs properly to bishops and religious to be bound by perpetual vow to devote themselves to the divine service [*Cf. Q[184], A[5]], while parish priests and archdeacons are not, as bishops are, bound by a perpetual and solemn vow to retain the cure of souls. Wherefore bishops "cannot lay aside their bishopric for any pretext whatever, without the authority of the Roman Pontiff" (Extra, De Regular. et Transeunt. ad Relig., cap. Licet.): whereas archdeacons and parish priests are free to renounce in the hands of the bishop the cure entrusted to them, without the Pope's special permission, who alone can dispense from perpetual vows. Therefore it is evident that archdeacons and parish priests may lawfully enter religion.
Reply to Objection 1: Parish priests and archdeacons have bound themselves to the care of their subjects, as long as they retain their archdeaconry or parish, but they did not bind themselves to retain their archdeaconry or parish for ever.
Reply to Objection 2: As Jerome says (Contra Vigil.): "Although they," namely religious, "are sorely smitten by thy poisonous tongue, about whom you argue, saying; 'If all shut themselves up and live in solitude, who will go to church? who will convert worldlings? who will be able to urge sinners to virtue?' If this holds true, if all are fools with thee, who can be wise? Nor will virginity be commendable, for if all be virgins, and none marry, the human race will perish. Virtue is rare, and is not desired by many." It is therefore evident that this is a foolish alarm; thus might a man fear to draw water lest the river run dry. [*St. Thomas gives no reply to the third objection, which is sufficiently solved in the body of the article.]
Whether it is lawful to pass from one religious order to another?
Objection 1: It seems unlawful to pass from one religious order to another, even a stricter one. For the Apostle says ( Heb. 10:25 ): "Not forsaking our assembly, as some are accustomed"; and a gloss observes: "Those namely who yield through fear of persecution, or who presuming on themselves withdraw from the company of sinners or of the imperfect, that they may appear to be righteous." Now those who pass from one religious order to another more perfect one would seem to do this. Therefore this is seemingly unlawful.
Objection 2: Further, the profession of monks is stricter than that of canons regular (Extra, De Statu Monach. et Canonic. Reg., cap. Quod Dei timorem). But it is unlawful for anyone to pass from the state of canon regular to the monastic state. For it is said in the Decretals (XIX, qu. iii, can. Mandamus): "We ordain and without any exception forbid any professed canon regular to become a monk, unless (which God forbid) he have fallen into public sin." Therefore it would seem unlawful for anyone to pass from one religious order to another of higher rank.
Objection 3: Further, a person is bound to fulfil what he has vowed, as long as he is able lawfully to do so; thus if a man has vowed to observe continence, he is bound, even after contracting marriage by words in the present tense, to fulfil his vow so long as the marriage is not consummated, because he can fulfil the vow by entering religion. Therefore if a person may lawfully pass from one religious order to another, he will be bound to do so if he vowed it previously while in the world. But this would seem objectionable, since in many cases it might give rise to scandal. Therefore a religious may not pass from one religious order to another stricter one.
On the contrary, It is said in the Decretals (XX, qu. iv, can. Virgines): "If sacred virgins design for the good of their soul to pass to another monastery on account of a stricter life, and decide to remain there, the holy synod allows them to do so": and the same would seem to apply to any religious. Therefore one may lawfully pass from one religious order to another.
I answer that, It is not commendable to pass from one religious order to another: both because this frequently gives scandal to those who remain; and because, other things being equal, it is easier to make progress in a religious order to which one is accustomed than in one to which one is not habituated. Hence in the Conferences of the Fathers (Coll. xiv, 5) Abbot Nesteros says: "It is best for each one that he should, according to the resolve he has made, hasten with the greatest zeal and care to reach the perfection of the work he has undertaken, and nowise forsake the profession he has chosen." And further on he adds (cap. 6) by way of reason: "For it is impossible that one and the same man should excel in all the virtues at once, since if he endeavor to practice them equally, he will of necessity, while trying to attain them all, end in acquiring none of them perfectly": because the various religious orders excel in respect of various works of virtue.
Nevertheless one may commendably pass from one religious order to another for three reasons. First, through zeal for a more perfect religious life, which excellence depends, as stated above (Q[188], A[6]), not merely on severity, but chiefly on the end to which a religious order is directed, and secondarily on the discretion whereby the observances are proportionate to the due end. Secondly, on account of a religious order falling away from the perfection it ought to have: for instance, if in a more severe religious order, the religious begin to live less strictly, it is commendable for one to pass even to a less severe religious order if the observance is better. Hence in the Conferences of the Fathers (Coll. xix, 3,5,6) Abbot John says of himself that he had passed from the solitary life, in which he was professed, to a less severe life, namely of those who lived in community, because the hermetical life had fallen into decline and laxity. Thirdly, on account of sickness or weakness, the result of which sometimes is that one is unable to keep the ordinances of a more severe religious order, though able to observe those of a less strict religion.
There is, however, a difference in these three cases. For in the first case one ought, on account of humility, to seek permission: yet this cannot be denied, provided it be certain that this other religion is more severe. "And if there be a probable doubt about this, one should ask one's superior to decide" (Extra, De Regular. et Transeunt. ad Relig., cap. Licet.). In like manner the superior's decision should be sought in the second case. In the third case it is also necessary to have a dispensation.
Reply to Objection 1: Those who pass to a stricter religious order, do so not out of presumption that they may appear righteous, but out of devotion, that they may become more righteous.
Reply to Objection 2: Religious orders whether of monks or of canons regular are destined to the works of the contemplative life. Chief among these are those which are performed in the divine mysteries, and these are the direct object of the orders of canons regular, the members of which are essentially religious clerics. On the other hand, monastic religious are not essentially clerics, according to the Decretals (XVI, qu. i, cap. Alia causa). Hence although monastic orders are more severe, it would be lawful, supposing the members to be lay monks, to pass from the monastic order to an order of canons regular, according to the statement of Jerome (Ep. cxxv, ad Rustic. Monach.): "So live in the monastery as to deserve to become a cleric"; but not conversely, as expressed in the Decretal quoted (XIX, qu. iii). If, however, the monks be clerics devoting themselves to the sacred ministry, they have this in common with canons regular coupled with greater severity, and consequently it will be lawful to pass from an order of canons regular to a monastic order, provided withal that one seek the superior's permission (XIX, qu. iii; cap. Statuimus).
Reply to Objection 3: The solemn vow whereby a person is bound to a less strict order, is more binding than the simple vow whereby a person is bound to a stricter order. For if after taking a simple vow a person were to be married, his marriage would not be invalid, as it would be after his taking a solemn vow. Consequently a person who is professed in a less severe order is not bound to fulfil a simple vow he has taken on entering a more severe order.