"David, I see you have your belt on." Mrs. Carver Chestnut lived next door to David, and many evenings they sat together under his walnut trees. The branches of the walnuts shaded his yard to the south, and when the day wore down, his dining room windows testified to their golden leaves. "Yes, Ma'am, I do have my belt on," David said. He ran his fingers over his new prized possession. "Thank you for it." "Well, David, Mr. Chestnut thought you'd like it." "How did he know?" David's brows furrowed in genuine inquisitiveness. "The other day, you know what he said to me? He said, 'David has all sorts of tools and things. I bet I know what he needs.' That's all I got out of him." She laughed and bit into a gingersnap. "I brought this plate of cookies over, David, and you haven't touched one of 'em." "Oh," he said, and took one. "That's right. He d...