Heidegger discussed the topic of "Nothingness" (Das Nichts) on 1929 in his "What is Metaphysics?". He mentioned the "Das Nichts selbst nichtet". This thinking of Nothingness is similar with Laotze's "Wu" ((sic)). This similarity is often mentioned, but its deeper meaning in the background of the thinking of "Sein und Nichts gehoren zusammen" (Heidegger) and the Being and Nothingness belonging together in the darkness of Tao (Laotze) is disregarded. This article tackles this disregarded topic in two perspectives. First, I reexamine volume 42 of Heidegger's complete works "Schellings Abhandlung uber das Wesen der Menschlichen Freiheit (1809)" in order to illuminate the trend from Philosophy of reason and will (Heidegger discussed on Kant and Nietzche) to the philosophy of non-will (Heidegger's discussion on Schelling and himself). Second. I reexamine Heidegger's discussion on Nietzsche (Nietzsche, Erster Band, Zweiter Band, Pfullingen, 1961) and its influence on Kyoto school philosopher K. Nishitani. In these new background I exposits the intercultural communication between Heidegger and Laotze about "Nothingness".
