Jacques-Marie-Émile Lacan (April 13, 1901 - September 9, 1981) was a French psychoanalyst and psychiatrist, who made prominent contributions to the psychoanalytic movement. His yearly seminars, conducted in Paris from 1953 until his death in 1981, were a major influence in the French intellectual milieu of the 1960s and 1970s, particularly among post-structuralist thinkers [1]. Lacan's ideas centred on Freudian concepts: e.g. the unconscious, the castration complex, the ego. He also focussed on identifications and the centrality of language to subjectivity. His work was interdisciplinary, drawing on linguistics, philosophy, and mathematics, amongst others. Although a controversial and divisive figure, Lacan is widely read in critical theory, literary studies, and twentieth-century French philosophy, as well as in the living practice of clinical psychoanalysis. Lacan's first official contribution to psychoanalysis was his theory of the 'Mirror Sta...