Freud talks about the "splitting of the ego" (German: Ich-spaltung, French: clivage du moi) as a process -- observable in fetishism and psychosis -- whereby two contradictory attitudes come to exist side by side in the ego: acceptance and disavowal.
Lacan expands the concept of Spaltung -- from a process unique to fetishism or psychosis -- to a general characteristic of subjectivity itself; the subject can never be anything other than split, divided and alienated from himself.
Truth and Knowledge
- Freud, Sigmund. (1940 ) "Splitting of the Ego in the Process of Defence." SE XXIII. p.273
- Lacan, Jacques. Écrits: A Selection. Trans. Alan Sheridan. London: Tavistock Publications, 1977. p.288
- Lacan, Jacques. Écrits: A Selection. Trans. Alan Sheridan. London: Tavistock Publications, 1977. p.269
- Lacan, Jacques. Écrits. Paris: Seuil, 1966. p.856