Dr. James Fallon, the author of "Born Psychopaths: A TED Psychologist's Journey into Brain Crime", used 35 years of research to discover that psychopaths have brain structures that are different from ordinary people. During a study in 2005, he discovered that his brain structure was exactly the same as that of a psychopath. James once believed that he had found the key to cracking psychopathy, but would this prove that he was also a psychopath? When his mother found out, she gave him a book. The book begins with the story of the first matricide case in the Cornell family, James' paternal lineage. In the following hundreds of years, his father's family successively exposed several cases of patricide, including the murder of his wife and his mother. After 2011, the other two patrilineal bloodlines were revealed to be murderers and gangsters who abandoned their wives. In 2008, James was invited to participate in TED and plucked up the courage to confess his bloody family history, which attracted millions of views. The author reveals his own growth process in an almost self-defeating way, hoping that everyone can realize the importance of the environment to a person. Because no one has a reason to give up his life.