From the psychological point of view, Antoine Roquentin could be seen as an individual suffering from depression, and the Nausea itself as one of the symptoms of his condition. Unemployed, living in deprived conditions, lacking human contact, being trapped in fantasies about the 18th century secret agent he is writing a book about, he establishes Sartre's oeuvre as a follow-up to Dostoevsky's "Crime and Punishment", or Rilke's "The Notebooks of Malte Laurids Brigge" in search of a precise description of schizophrenia. Rilke's character anticipates Sartre's.