473. There are also milder reasons that are real weighty ones, which separate from the bed, and yet not from the house. As for example, a cessation of childbearing on the part of the wife due to advanced age and a consequent intolerance toward and evasion of physical love, while ardor still persists on the part of the husband. Besides similar circumstances, in which rational judgment sees justice, and which do not hurt the person's conscience.