Mind Games by Sarah Stegall Copyright ©1996 by Sarah Stegall Writer: Vince Gilligan Director: Rob Bowman “I think, therefore I am.” Intended as a declaration of first principles by philosopher Rene Descartes, this dictum could also serve as a definition of self: I am what I think. If we lose control of what we think, lose control of our minds (through drug abuse, injury or Alzheimer’s, for example), we become different persons. We are not who we are. “The X-Files” returns to the theme of identity (previously explored in such classics of paranoia as “Ice” and “Colony/End Game“) with an…