726. The Probabilists answer: (a) The two principles with reference to doubtful law are understood and proved by Probabilism by an analysis of the notions of obligation and incertitude (see 285, 654), and hence they apply to every case that is restricted to the question of probable lawfulness or unlawfulness.
The rules quoted against Probabilism—there are some that might also be quoted against Probabiliorism and Equiprobabilism—are opposed to it only in appearance, since they deal with matters that are outside its sphere (see 697). Thus, in civil cases when both ownership and possession are doubtful, the decision must be given for the more probable side, since the issue is not what is lawful, but what seems to be true. As to the principle of possession, it is not, as supposed, unfavorable, but favorable to Probabilism; since liberty, inasmuch as it is presupposed by obligation (for only those who have freedom can receive obligation), has priority and must be given the benefit of the doubt, whenever a strictly probable reason in its favor cannot be refuted.
(b) Solid probability for the law creates doubt of the truth of the opinion for liberty, but it does not create doubt of its probability; for truth is the agreement of one’s judgment with the facts, probability the appearance of such agreement on account of the arguments by which the judgment is supported. Hence, greater probability for law does not make uncertain the probability there is for liberty. Neither is it a sign of imprudence to accept the less probable, if one has sincerely and diligently sought the truth; for even the more probable may not be true, and the great majority of moralists hold that one is not obliged to follow it.
727. Criticism of the Pragmatic Test Offered by Probabilists.—Probabilism boasts of the ease with which it can be used (see 700, 720); but the ease with which it can be misused is greater still.
(a) Persons not inclined to piety must quickly fall into Laxism, if they make use of this system, for they will accustom themselves to find every sort of pretext to escape unwelcome duties by raising doubts and dignifying them with the name of probable opinions; they will follow, now one opinion, now its contrary, according as it suits their interests; they will become stubborn in their own views, and unwilling to change or accept instruction.
(b) Persons inclined to piety, if guided by Probabilist principles, will soon lose all interest in what is higher and better, and content themselves with the minimum; for in every case of uncertainty Probabilism permits one to choose what is less safe and less probable.
728. General Answer of the Probabilists to the Objections of the Preceding Paragraph.—(a) The history of Probabilism contradicts these objections. From its beginning to the present day it has been defended and followed by men noted for piety, who used kindness towards others, but were severe with themselves. While the principles of stricter systems have proved a torture both to confessors and penitents, no detriment to holiness is observed from the use of Probabilism.
(b) The nature of Probabilism refutes the objections in question. There is no system so good that it may not be perverted and turned to evil, and stricter systems have been converted into Tutiorism or Rigorism. But the logical and usual results of Probabilism are not a lowering of moral standards. If these evils follow it, they do so only when it is not rightly understood or not rightly applied.
729. The charges of a tendency to Laxism are thus answered:
(a) Probabilism holds that only learned theologians are judges of internal probability. Others must not decide for themselves, but must seek instruction from their spiritual guides who have competent knowledge. The moralists themselves must not be so wedded to their opinions that they are not always ready to change when they find they are wrong or learn that the Church does not admit their view.