Descartes theory of the mind

This essay explores Rene Descartes' theory of the mind. It examines the theory and it relation to the body.
An essay that answers this question: Explain what you think the most serious problem with, Rene Descartes' theory of the mind and its relation to the body. Make sure to explain why what you describe is a problem for his theory. Please use Rene Descartes' Philosophical Writings. Be sure to include in your Rene Descartes' term paper what the literature says about the theory of the mind. This is not a book report but a discovery essay on Rene Descartes'.