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,
Philosopher in Meditation and titling it "Philosopher in Contemplation" or "Philosopher with an Open Book". Yet the real credit for the attribution to Koninck should go to John C. Van Dyke, who wrote: "In fact, one may be heretical enough to think that someone like Koninck or Dou may have painted them..." The subject matter and details of the Koninck picture seem to have been directly inspired by a Rembrandt etching dated 1642 and representing "St. Jerome in a dark chamber" (Bartsch 105), which is the only other known work by Rembrandt that features a complete helical staircase. The traditional iconography of the