Au travers d'un apport psychiatrique, psychanalytique et linguistique, les auteurs tentent d'interroger l'avancee des connaissances dans le domaine de la psychiatrie. Tirant quelques exemples de la litterature scientifique, ils montrent que grace a l'eviction de la parole dans l'ecriture scientifique, la rationalite scientifique cree sa propre irrationalite. Apres une breve analyse linguistique de publication actuelle, on tentera d'introduire une discussion epistemologique, notamment sur la dimension de l'etre humain, etre de langage dont l'occultation accompagne celle du sujet. Si la science ne pense pas, les scientifiques, eux, parlent, et l'ideologie comme le mythe ne peuvent alors etre eradiques de la connaissance scientifique. Le chercheur, meconnaissant sa dette aux faits de parole et de langage, favorise d'autant cette fabrique ideologique qui amene parfois a parler de decouvertes faites en depit des scientifiques.
The authors attempt to examine progress of knowledge in the field of psychiatry through a psychiatric, psychoanalytical and linguistic contribution. Drawing a number of examples from scientific literature, they show that by evicting speech from scientific writing, scientific rationality creates its own irrationality. After a brief linguistic analysis of current publications, we shall attempt to introduce an epistemological discussion, particularly on the dimension of the human being, being of language whose overshadowing accompanies that of the subject. While science does not think for itself, the scientists speak<space>; and ideology, like myth, cannot be eradicated from scientific knowledge. The research worker, ignorant of his or her debt to the contribution of speech and language is all the more likely to foster this ideological construction that sometimes leads them to talk about discoveries made in spite of the scientists themselves.