Jacques-Marie-Émile Lacan (April 13, 1901 September 9, 1981) was a French psychoanalyst and psychiatrist who made prominent contributions to psychoanalysis, philosophy, and literary theory. He gave yearly seminars, in Paris, from 1953 to 1981, mostly influencing France's intellectuals in the 1960s and the 1970s, especially the post-structuralist philosophers. His interdisciplinary work is Freudian, featuring the unconscious, the castration complex, the ego; identification; and language as subjective perception, and thus he figures in critical theory, literary studies, twentieth-century French philosophy, and clinical psychoanalysis.