address critical analysis of fundamental assumptions or beliefs with underlying theories of their own. John Locke and Rene Descartes were both classified as modern philosophers in the seventeenth century who sums up the subject about personal identity and its determents in reference to our own existence, such as who are we? The personal identity theory states that the philosophical confrontation with the ultimate questions of our own existence, such as who are we, and is there life after death? This
