Being and Nothingness
To bear out further the diversity of sentiment evoked from the notion of intentionality, Husserl followed on Brentano, and gave the concept of intentionality more widespread attention, both in continental and analytic philosophy. In contrast to Brentano's view, French philosopher Jean-Paul Sartre ("Being and Nothingness") identified intentionality with consciousness, stating that the two were indistinguishable. German philosopher Martin Heidegger ("Being and Time"), defined intentionality as "care" ("Sorge"), a sentient condition where an individual's existence, facticity, and being in the world identifies their ontological significance, in contrast to that which is merely ontic ("thinghood").