Merleau-Ponty and the Foundations of Psychopathology Maurice Merleau-Ponty was a 20 th-century French philosopher who worked at the intersection of phenomenology and existentialism. Phenomenology, founded by Edmund Husserl and further developed by his students, including Martin Heidegger, is the study of human experience and existence. Traditionally, it describes the essential structures of consciousness-i.e., those features that hold for any experiencing human subject-including selfhood, intersubjectivity, affectivity, and temporality. Existentialism, in contrast with phenomenology, is not a systematic research program. Its themes originate in the 19 th-century work of Søren Kierkegaard and Friedrich Nietzsche, though "existentialism" was not used as a philosophical label until Gabriel Marcel applied it to the work of Jean-Paul Sartre in the 1940s (Fulton 1999, 12-13). Like