Jacques Lacan was a philosophically minded French psychoanalyst, whose perspective gained widespread influence in French psychiatry and psychology. Lacan saw himself as loyal to and rescuing Freud's legacy. In his 16th
Seminar, , Lacan proposes and develops a homology between the Marxist notion of
surplus value and his own notion of . While Lacan was not himself a Marxist, many Marxists (particularly
Maoists) drew on his ideas.
Louis Althusser The French Marxist philosopher
Louis Althusser is widely known as a theorist of
ideology, and his best-known essay is
Ideology and Ideological State Apparatuses: Notes Toward an Investigation. The essay establishes the concept of ideology, also based on
Gramsci's theory of
hegemony. Whereas hegemony is ultimately determined entirely by political forces, ideology draws on Freud's and Lacan's concepts of the
unconscious and
mirror-phase respectively, and describes the structures and systems that allow us to meaningfully have a concept of the
self. These structures, for Althusser, are both agents of repression and inevitable – it is impossible to escape ideology, to not be subjected to it. The distinction between ideology and science or philosophy is not assured once and for all by the
epistemological break (a term borrowed from
Gaston Bachelard): this "break" is not a chronologically determined event, but a process. Instead of an assured victory, there is a continuous struggle against ideology: "Ideology has no history". His essay
Contradiction and Overdetermination borrows the concept of
overdetermination from psychoanalysis, in order to replace the idea of "contradiction" with a more complex model of multiple
causality in political situations (an idea closely related to Gramsci's concept of
hegemony).
Cornelius Castoriadis Greek-French philosopher, psychoanalyst, and social critic
Cornelius Castoriadis also followed up on the work of Lacan.
Slavoj Žižek in 2008 The Slovenian philosopher
Slavoj Žižek promotes a form of Marxism highly modified by
Lacanian
psychoanalysis and
Hegelian philosophy. Žižek contests Althusser's account of ideology, because it misses the role of
subjectivity. == Post-structuralism ==