The Father and his Daughters explained simply

A Man had two Daughters, one of whom he gave in marriage to a gardener, and the other to a potter. After a time he thought he would go and see how they were getting on; and first he went to the gardener's wife. He asked her how she was, and how things were going with herself and her husband. She replied that on the whole they were doing very well: "But," she continued, "I do wish we could have some good heavy rain: the garden wants it badly." Then he went on to the potter's wife and made the same inquiries of her. She replied that she and her husband had nothing to complain of: "But," she went on, "I do wish we could have some nice dry weather, to dry the pottery." Her Father looked at her with a humorous expression on his face. "You want dry weather," he said, "and your sister wants rain. I was going to ask in my prayers that your wishes should be granted; but now it strikes me I had better not refer to the subject."