The second intuition animating Heidegger's philosophy derives from the influence of Edmund Husserl , a philosopher largely uninterested in questions of philosophical history. Rather, Husserl argued that all that philosophy could and should be is a description of experience (hence the phenomenological slogan, "to the things themselves"). But for Heidegger, this meant understanding that experience is always already situated in a world and in ways of being. Thus Husserl's understanding that all consciousness is " intentional " (in the sense that it is always intended toward something, and is always "about" something) is transformed in Heidegger's philosophy, becoming the thought that all experience is grounded in "care". This is the basis of Heidegger's "existential analytic", as he develops it in Being and Time . Heidegger argues that describing experience properly entails finding the being for whom such a description might matter. Heidegger thus conducts his description of experience with reference to " Dasein ", the being for whom Being is a question.