Alan Watts once said, "Trying to define yourself is like trying to bite your own teeth." Personal identity defines a quality of a human being that makes him or her unique. People must have images of themselves in their own minds, while identifying others with different images. In other words, both internal (mind) and external (body) aspects need to be considered to differentiate one person from another. There are several general philosophical theories about the term personal identity, such as the body theory, soul theory, and memory theory. …
