Ron said, "Um, no reason," and quickly stuffed the letter out of sight. The look of disappointment that flashed across Percy's face, however, made Ron feel as if he'd just stabbed his brother with a carving knife. Oh, it said, you don't really want me in your life, do you, you just want me to help you with your homework. Ouch, little brother, that hurts. Ron, who had only a few months ago resolved not to do that sort of thing, added hastily and with not a little guilt in his voice, "I'll tell you later, okay?"