Being ground his concept of freedom ontologically by distinguishing between being-in-itself and being-for-itself. Being is also understood as one's "state of being," and hence its common meaning is in the context of human (personal) experience, with aspects that involve expressions and manifestations coming from an innate "being", or personal character. Heidegger coined the term ""dasein"" for this property of being in his influential work "Being and Time" ("this entity which each of us is himself…we shall denote by the term 'dasein.'"), in which he argued that being or "dasein" links one's sense of one's body to one's perception of world. Heidegger,
Being and Time of what a hammer "is" is not determined by a theoretical understanding of its presence, but by the fact that it is something we need at the moment we wish to do hammering. Only a "later" understanding might come to contemplate a hammer "as" an object. The total understanding of being results from an explication of the implicit knowledge of being that inheres in "Dasein". Philosophy thus becomes a form of interpretation, but since there is no external reference point outside being from which to begin this interpretation, the question becomes to know in which way to proceed with this