The document discusses multiple identities, shared identities, and having a personal multiple identity. It states that with a multiple identity, one may talk differently to different people using accents, slang, or languages. People may also have different values and beliefs depending on their backgrounds. A shared identity could be a national identity where people have the same language but different accents. The document also provides an example of one person's multiple identity and how they have family from different places like Bedford and Jamaica.