What special ability do we learn that David has, and what are the circumstances under which the reader learns this? Why does this fact allow David to especially appreciate his promise?

David begins the book from his perspective as a child, and continues the story through his teenage years. He is part of a secret group who is able to communicate amongst each other telepathically. Their abilities are considered deviant from the norm, or the "true image" of man, and thus David has to be very careful not to reveal this talent to anyone else. He is a trustworthy and understanding person, although at times he can be lazy, as he often avoids work or plans poorly. He also often has vivid dreams in his sleep portraying his fears and prophecies. His caring nature can be seen in how much he cares for his younger sister and how he is willing to conceal Sophie’s secret of having six toes.