ENThe article discusses myth and philosophy in Heidegger's works. Following a rational tradition of Western metaphysics, Heidegger raises the issue of the grounding of the universe; however, questioning the grounding of rationality itself, he points to a mythical world. As a consequence, Heidegger separates himself from the traditional paradigm of Western thought. He does not impose rational structures onto myth but, on the contrary, perceives a historical process of the development of rationality as a part of mythical history. Expressing this history through ontological categories, the German philosopher views the course of rationality as a tendency towards a technocratic thought - the ultimate form of the obliteration of being.