In “De quarto praecepto decalogi,” he says that ordinarily, a husband sins mortally against the fourth commandment by saying insulting things or seriously striking his wife in any way (but not if done playfully or lightly as part of a joke, as is obvious). In proportion to a grave cause, he may sometimes rebuke her with harsh words. But recourse to corporal punishment is almost always forbidden to him, or more properly, requires a higher bar than corporally chastising a child or servant, since a wife is neither one of those, but his “companion.” The rare exception is in the case of a direly grave cause, in which case it is sometimes licit to rebuke her with “moderate blows.” But even this must be in proportion to her status: it is almost never acceptable if she is a woman of noble birth. (This is similar to where he says a noble/aristocratic wife is under no obligation to obey a husband who demands that she clean or cook, and that if she does fulfill these wishes, she can compensate herself by secretly taking/spending his money).
In “De divortio,” he explains what the direly grave cause which makes moderate corporal punishment licit is: adultery. This is in accordance with St. Thomas and most other theologians. That is, rather than have to divorce an adulterous wife, a man can chastise her with words or even moderate blows if that will adequately correct her.
So in “De quarto praecepto decalogi,” he says that ordinarily, a husband sins mortally against the fourth commandment by saying insulting things or seriously striking his wife in any way (but not if done playfully or lightly as part of a joke, as is obvious). In proportion to a grave cause, he may sometimes rebuke her with harsh words. But recourse to corporal punishment is almost always forbidden to him, or more properly, requires a higher bar than corporally chastising a child or servant, since a wife is neither one of those, but his “companion.” The rare exception is in the case of a direly grave cause, in which case it is sometimes licit to rebuke her with “moderate blows.” But even this must be in proportion to her status: it is almost never acceptable if she is a woman of noble birth. (This is similar to where he says a noble/aristocratic wife is under no obligation to obey a husband who demands that she clean or cook, and that if she does fulfill these wishes, she can compensate herself by secretly taking/spending his money).
In “De divortio,” he explains what the direly grave cause which makes moderate corporal punishment licit is: adultery. This is in accordance with St. Thomas and most other theologians. That is, rather than have to divorce an adulterous wife, a man can chastise her with words or even moderate blows if that will adequately correct her.