IntroductionMartin Heidegger (1889-1976) is a contemporary German philosopher of the 20th century. Noted for being a gifted thinker, Heidegger contributed to more than one field, namely phenomenology, existentialism, hermeneutics, political theory, psychology and theology. “Beingand Time”, his first work is recognized as the most important of all his works. It is in Being and Time that Heidegger introduces the term Dasein to explain “being”. Heidegger adopts a non-metaphysical and coherent way of thinking to explain “being” without reducing it to a scientific phenomenon. When reading Heidegger's philosophy, Heidegger uses certain philosophical terms in an unconventional sense. His philosophy is best understood when the reader personally identifies with the description. DaseinHeidegger believes that human existence is based on the fact that we always find ourselves in a “world”. It emphasizes that human existence is inseparable from a context, which in this case is called a "world". world'. This is a new vision, if we consider the point of view of the rationalists. For example, for Descartes, only “mind” exists. Existence is associated with the ability to think. Descartes' "mind" will think and feel, even if the whole world was an illusion. But Heidegger argues that having thoughts and feelings is only possible when humans are involved in a “world.” Humans are a kind of entity called “Dasein”. “Dasein” literally means “existence” or “being there” (“Da” means “there” and “Sein” means “to be”) in German. The reason for this choice of the word “Dasein” is to emphasize “being-in-the-world” as opposed to simple “being”. The “there” in “Dasein” is the place (the world) where “Dasein” learns to locate itself in the middle of the paper……an effective intuition to display its relevance in the world. For example, using a knife to sharpen a pencil would not be considered appropriate. The relationship that this world, as described above, has with Dasein is that the world offers Dasein potential ways of being. The world allows an entity to be encountered so that it can play a role in the world. In conclusion, the world is the place where Dasein identifies a “for-which” it lives, where it continually shapes its being, where its actions have intuitive meaning and where it can finally achieve its being.References1. How to Read Heidegger, Mark Wrathall2. Being and Time, trans. J. Macquarrie and E. Robinson3. Internet Encyclopedia of Philosophy, Martin Heidegger (http://www.iep.utm.edu/heidegge/)4. Wikipedia, Martin Heidegger (http://en.wikipedia.org/wiki/Martin_heidegger)