This Final Year Project will make explicit an implicit assumption that is contained within the work of Sigmund Freud, namely, that Freud's conception of what he termed the death drive is manifested in pathological states, as well as being at the core of human subjectivity. In order to achieve this section one shall discuss and elucidate Freud's development of his notion of a death drive or Thanatos, the aim of which is 'to lead what is living into an inorganic state', to re-establish an original state of being [Freud 1940a: 379]. Section two shall focus on the development of Freud's theory by the French analyst Jacques Lacan who argues that 'virtually every drive is a death drive' [Lacan 1964: 275]. Here particular emphasis will be placed on providing an understanding of the Lacanian subject, which in turn highlights the acquisition of language. Section three shall relate the death drive to human subjectivity from both a Lacanian and Freudian perspective. It shall draw on the work of Lacanian analyst Ellie Ragland, who observes the death drive in repetitious rituals and Freud who related the death drive to the neurotic sense of guilt associated with civilization. Section four shall draw on the work of Lacanian analysts Drs. Rik Loose and Charles Melman both of whom relate the death drive to certain types of toxicomania, drug and alcohol addiction. Through this discussion, the toxicomaniacs particular relation to the death drive shall be explained.