His key statement on negation, most extensively developed in the paper by that name (1925), touches on such key issues as the problem of language, judgement, reality testing, object relations and psychosis. In that paper Freud shows how affirmation in one system—the unconscious—is allowed to reach consciousness and circumvent the censorship by adopting through language a negative form. This paper was not available in French until 1934 in a translation by Hoesri in La Revue Française de Psychoanalyse. The interest in the negative emerges again in the last phases of Freud's life in the fetichism paper, the paper on splitting and in parts of the paper on constructions in analysis. (p. 502)
