The following was presented at the Fourth Collegium in the Humanities held at Thammasat University on January 4 and 5, 2001. The paper is intended as an introduction to Heidegger’s important essay, "The Origin of the Work of Art". In the course of the paper, I discuss the following themes:Heidegger’s questioning of the concept of truth in terms of Aletheia, the self disclosing and concealing of Being, as the setting for a radical revaluation of techne, (the Greek word for art, as a practical, productive knowledge (Wissen)), in which techne will now be conceived as not only a way of kno wing that stands alongside theoria, but even more, as a decisive site for the disclosure of Being. The actuality of art, its "thingly" character, will not be seen as a static object, therefore, but as energeia, activity or "being-at-work". Techne will be thought as event, an event of Being, the site for the happening of Truth (Aletheia) This culminates in Heidegger’s delimitation, or definition, of art as the site or place (topos, Orter; in the German word Heidegger uses) of truth’s setting-itself-to- work. This is art’s "activity", its "actuality". Finally, the significance of this is.in the way it opens a new questioning of the European experience of nihilism as the "death of God", or withdrawal of gods, and the related triumph of knowledge in the form of scientific technicity, the calculative thinking of a techne that demands, challenges, provokes, and sets up Being as an object and conceives of earth , for example, as a "natural resource" to be exploited. The work of art, as the techne in which "truth (Aletheia) sets itself to work", what Heidegger might call "great art", is then to be seen as a possible way of overcoming (Verwindung) of nihilism and of questioning the essence of technology and calculative thinking. Through a questioning of the origin of the work of art, philosophical thinking will go beyond a mere "aesthetics" toward the more fundamental questioning of the "end of metaphysics". Through a return to an archaic Greek world opened in and by the temple, and through a thinking of all that is still yet to be thought, or that is still held in reserve in that experience, Heidegger seeks the possibility of a new beginning for the European, especially the Germanic, historical destiny. No doubt the revaluation of techne, not only in terms of the work of art, but in terms of the political and the founding of a nation and the opening of the destiny of a people, which is Heidegger’s way of thinking the actuality of the work of techne, are all crucial and deeply related themes. But, due to limitations of time and space in this paper, both the links of thi s with Heidegger’s meditations on the poetry of Holderlin, and the political dimensions of this work and Heidegger’s relation to National socialism during the 1930s, are not considered.