Jean-Paul Sartre–Martin Heidegger intellectual relationship

Jean-Paul Sartre–Martin Heidegger intellectual relationship is presented through a precise point of contact and a broader philosophical trajectory: Sartre was reading Martin Heidegger’s Being and Time in April 1939, around the time he appears to have written the first conclusion to The Imaginary. The book’s account connects that work on imagination to the ontological drama of Being and Nothingness, but does not identify particular arguments in The Imaginary as direct borrowings from Heidegger.

The documented point of contact

The clearest evidence of Sartre’s engagement with Heidegger is chronological. The introduction suggests that the first part of The Imaginary’s two-part conclusion, Consciousness and Imagination, was written last and seems contemporaneous with Sartre’s reading of Being and Time in April 1939. This places Heidegger’s book within the intellectual setting of Sartre’s late reflection on imagination, without establishing that it caused or supplied any particular claim.

The distinction matters because the account is careful about what it can show: it names a reading, a date, and an apparent overlap in composition. It does not offer a record of exchanges between the two philosophers or a detailed comparison of their arguments. The relationship is therefore most securely described as an engagement situated in Sartre’s developing philosophical work, rather than as a fully documented dialogue.

From psychological description to philosophical questions

The Imaginary begins its account of images with a method of reflective description. When consciousness produces an image of Pierre, Pierre—not a miniature representation inside the mind—is the object of that consciousness. To describe the image as an image requires a further reflective act, which turns attention from the object to the way it is given. Sartre distinguishes this immediate descriptive knowledge from explanatory hypotheses about the image’s nature: reflection provides certainty, while such hypotheses remain probable.

That methodological distinction supports a larger question. Instead of treating psychology as a collection of separate investigations, the conclusion asks what an account of imagining reveals about consciousness and the human condition considered as an indivisible unity. The introduction situates this turn against psychologists’ attempts to make psychology a unified science through experiments and tests, and emphasizes Sartre’s shift from describing a particular mental phenomenon toward asking what consciousness must be if it can imagine.

The ontological trajectory

The introduction identifies the study of imagination as an important stage in the development of the ontology associated with Being and Nothingness. In its account, consciousness can create images in the absence of the objects concerned and thereby negate the real. This gives the analysis a significance beyond psychology: the relation between consciousness and what is absent becomes part of a larger drama involving consciousness, nothingness, and being-in-itself.

The conclusion develops the connection between imagining and apprehending the real as a world. The imaginary appears against the world, while consciousness of the world also motivates the possibility of surpassing it toward the imaginary. Sartre accordingly treats imagination not as an incidental extra, but as an essential condition of consciousness. This is the conceptual movement that the introduction presents as preparing later ontological work. Its connection to Heidegger is contextual and chronological; the evidence does not make the argument a simple application of Being and Time.

The wider philosophical turn

The conclusion’s second movement extends the analysis from imagining to the work of art. Sartre describes the aesthetic object as irreal: in a portrait, the real canvas and paint are not identical with the depicted person as an object of aesthetic appreciation. The canvas serves as a material analogon through which an imaging consciousness apprehends that object. The artwork thus carries the book’s account beyond psychological description into a philosophical analysis of how consciousness relates to what is not given as a real object.

This expansion helps define the significance of Sartre’s relationship with Heidegger as it appears in the supplied account. Heidegger’s Being and Time belongs to the moment when Sartre’s inquiry turns toward the nature of consciousness and its relation to being; the inquiry itself proceeds through Sartre’s analysis of reflection, negation, imagination, and aesthetic experience. The evidence supports seeing The Imaginary as a stage in that philosophical development, but not assigning its specific account of artworks or its conclusions to Heidegger.