Second Version of the Review:
Introduction to Philosophy—Thinking and Poetizing1

Philosophy is the thinking of thinkers. They think that which is, being, insofar as it determines beings. For a long time, and today still, that which comes to presence [das Anwesende], the present, counts for Western thinking as that which is. But even that which is in the process of arriving [das Kommende] already is in its arriving. That which was [das Gewesene] also still is, insofar as it comes to presence and passes over us. Future and origin approach each other. In this facing approach, future and origin surpass each other alternatively in different expanses. What is present [das Gegenwärtige] first emerges from out of the facing approach of the future and the origin. [What is present] is that which appears to leap out of the facing approach and spread itself open for itself, and which makes it seem as if what is present were all that exists, while that which was is no longer and that which is to come is not yet—thus at each point they do not exist. What is present only exists as the alternating transition of what is to come into what was and of what was into what is to come. Therefore, every present moment is an ambiguous ambiguity. If we only search in the present for that which is, we will never find it, because what is present remains ambiguous, and this ambiguity stems directly from what exceeds the present and exists more so [eher] than does the present.

1. Important material about history and historiography and technology. [A review of GA 50, pp. 90–101.—Ed.]

Introduction to Philosophy—Thinking and Poetizing (GA 50) by Martin Heidegger