19. In the first place We remind them that they are guilty of serious sin if, while sitting in the holy tribunal of Penance, they hear their penitents carelessly without advising or questioning them, but immediately pronouncing the form of absolution when the penitent has completed the list of sins. Such a procedure is, of course, far different from that of a skillful doctor who pours oil and wine on the wound. Yet every minister of the sacrament of Penance does a doctor's work. So they should examine carefully not only the circumstances of the sins but also the character and disposition of the one who has committed the sins; then the minister can prescribe the appropriate remedies to enable him to obtain the salvation of his soul. "But the priest should be discerning and prudent, so that as an experienced doctor does, he likewise may pour oil and wine on the wounds of the afflicted person by carefully investigating the circumstances both of the sinner and of the sin. Thus he may discover the proper advice to offer and the proper remedy to apply by taking different measures for the cure of the sick man". These are the words of Our famous predecessor Innocent III at the General Council of the Lateran, chapter Omnis utriusque sexus, de Poenitentiis et remissionibus. The Roman Ritual approved by Paul V, likewise Our predecessor, in an Apostolic Constitution, agrees with this doctrine, where it states under the heading de Sacramento Poenitentiae: "If the penitent does not mention the number, kind, and circumstances of sins, the priest should prudently question him". But if the confessor knows that the penitent has not confessed certain sins, whether from forgetfulness or ignorance, the confessor must circumspectly and prudently remind him of his omissions since otherwise the confession would lack completeness. He must warn and correct him that by proper preparation, he may obtain the fruit of the sacrament of Penance".This is the opinion of St. Bernardine of Siena, who answers in the affirmative the question whether the confessor is obliged to investigate and examine the conscience of the sinner carefully. He says that "this is to be done not only regarding omissions through carelessness or shame but also regarding his ignorant silence, because sinners do not know the things of God. So, if the confessor hears anything from the penitent or knows of anything through a probable conjecture, he should remind him of it. Otherwise, it may be feared that the penitent is crassly ignorant, which according to William does not excuse him. Perhaps though he does not know that such an act is a sin, for according to Isidore the ignorant man sins every day and does not know it" (tome 2, serm. 27, art. 2, chap. 3, p. 167).