People have always been interested in the idea of finding out about personal identity, what makes you the same person as you were when you were five and what will make you the same person when you are eighty. Derek Parfit summed up this idea by saying “Whatever happens between now and any future time, either I shall still exist, or I shall not. Any future experience will either be my experience, or it will not.” (Parfit- 186), which is what personal identity looks into. This essay will discuss whether personal identity is a matter of physical or psychological continuity, taking into account the famous ideas of philosophers such as John Locke, Derek Parfit and Bernard Williams.…