254、⒅第三个是婚前性无能。这是分离的一个因素，因为婚姻的目的就是繁衍后代，而性无能使之成为不可能。由于他们早就知道这一点，所以这是故意剥夺妻子要孩子的希望；然而，正是这希望滋养并强化女人们的婚姻之爱。
254、（18）第三是婚前存在的性无能。
这是因为婚姻的目的就是繁衍后代。而性无能使之不可能。另外，因为双方在婚前了解这点，一方就象是故意剥夺了对方拥有孩子的希望，这是滋养和维持女人的婚姻之爱的重要因素。
254. (xviii) The third reason for legitimate separation is impotence before marriage.
This is a reason for separation, because the purpose of marriage is the procreation of offspring, and this is impossible in these cases; and knowing this, they deliberately deprive their wives of the hope of children, although it is this hope which nourishes and strengthens their conjugial love.
254. 18. A third reason for legitimate separation is impotence prior to marriage. This is reason for separation, because the goal of marriage is the procreation of offspring, which the already impotent cannot provide. Moreover, because they know this beforehand, they deliberately deprive their partners of any hope of children, a hope which nevertheless nourishes and sustains the conjugial love of women.
254. 18. A third legitimate cause of separation is impotence before marriage. This is a cause of separation because marriage's purpose is offspring, which is impossible for the impotent. Knowing this beforehand, they purposely deny their wives this hope that suckles and strengthens their marital love.
254. XVIII. THAT THE THIRD CAUSE OF LEGITIMATE SEPARATION IS IMPOTENCE BEFORE MARRIAGE. The reason why this is a cause of separation is because the end of marriage is the procreation of offspring, and with the impotent this is impossible; and since they know this beforehand, they purposely deprive their wives of the hope of it, a hope which nevertheless suckles and strengthens the conjugial love of women.
254. (xviii) A third cause of legitimate separation is impotence before marriage. This is a cause of separation because procreation of offspring is an end in marriage, and by the impotent is impossible; and since they know this beforehand, they deliberately deprive their wives of the hope of it, a hope, however, which nourishes and re-enforces their marital love.
254. (18) The third cause of legitimate separation is impotence before marriage. The reason why this is a cause of separation is, that the end of marriage is the procreation of offspring, and by such it is impossible; and as they know this beforehand they purposely deprive their married partner of the hope of it, the hope which yet should nurse and strengthen their conjugial love.
254. XVIII: Quod Tertia causa legitimae separationis sit Impotentia ante conjugium. Quod haec sit causa separationis, est quia finis conjugii est procreatio sobolis, et haec ab illis non dabilis est; et quia praesciunt hoc, conjuges ex proposito deprivant spe ejus, quae spes tamen amorem illarum conjugialem lactat et firmat.