Abstract
In his method, Descartes divides objects into pieces and seeks order, he is primarily concerned with questioning mathematics. For in order to think, these objects must be legible, visible and accessible, and then organized, arranged - dare I say it - for a scientific experiment. The introduction of Freud's psychic apparatus, however, implies shadowy zones, blurred objects, often inaccessible; and yet constitutive of the subject, undeniable but ineffable. (...) Images enable us to think differently, methodically still, but differently. With Descartes, the1 method implies distinct and clear parts, but photography echoes our unconscious - what could be more confused and obscure?