The Trial of John W. Hinckley, JR.: A Case Study in the Insanity Defense

This book explains that people can have more than one person in their brain. Different personalities may or may not be aware of other personalities. This is not the only book I have read on this subject. Some people strongly disagree. But just think about people who grow up knowing two or more languages. They have a different personality for each language. I believe strongly that multiple personalities exist. This is only associated with murder in a very small percentage of the cases.