"Why don't people's hearts tell them to continue following their dreams?" the boy asked the alchemist. "Because that's what makes a heart suffer most, and hearts don't like to suffer." From then on, the boy understood his heart. He asked it, please, never to stop speaking to him. He asked that, when he wandered far from his dreams, his heart press him and sound the alarm. The boy swore that, every time he heard the alarm, he would heed its message."