How did Jean-Paul Sartre use Husserl’s ideas about consciousness and imagination?

Jean-Paul Sartre utilized the phenomenological method developed by the German philosopher Edmund Husserl to conduct careful, unprejudiced descriptions of conscious experience.1

Sartre’s early works, specifically L’Imagination (1936) and The Psychology of Imagination (1940), remained entirely within the context of Husserl’s analyses of consciousness. He employed Husserl’s concept of intentionality to explain the fundamental distinction between perceptual consciousness and imaginative consciousness. Furthermore, Sartre frequently utilized Husserl’s method of ideation, known as Wesensschau, to investigate these phenomena.2

By adopting this framework, Sartre was able to explore how consciousness relates to objects and the world, a foundation he later expanded upon in his major philosophical work, Being and Nothingness. Through these phenomenological studies, Sartre established himself as a leading figure in existential phenomenology, applying Husserl's rigorous descriptive techniques to analyze human behavior and the nature of existence.312