內容摘要：在、現、隱三者，交互滲透、互相關涉，此概括論旨可歸屬海德格中後期中心思想，殆無疑慮。然而，現象學的基進隱蔽性問題亦藉由「存在論差異」之中介而見諸前期思想之中。本文旨在探討在基礎存在論視野內，海德格對於在、現、隱之交互關係的理解與陳構。《存在與時間》常常被當作詮釋學現象學的經典著作。但我們的分析會顯示，由於「詮釋學循環」隱含「中心性」與「整全體」的雙重設定，而由此只會是對於現象學隱蔽性問題之初步回應。最後，透過對於《存在與時間》論析「常人」與「死亡」的篇章作解構詮釋，本文會顯示，詮釋學思想雖然主導了此在的現象學，但後者針對具體的現象學分析卻突顯了某些切斷此在存活的循環運動的現象。

Abstract: The emphasis of the interlacing and interweaving of Being, appearance and concealment is a general characterization of Heidegger’s later philosophy. But the problem of radical concealment is also present in the works of early Heidegger, mediated through the problem of “ontological difference”. The present paper aims at examining the ways in which Heidegger construes and articulates the relation between Being, appearance and concealment within the horizon of the fundamental ontology. Being and Time is often regarded as a classical work of the hermeneutic phenomenology. However, our analysis shows that the prominent idea of “hermeneutic circle”, with its implicit presuppositions of “centricity” and “totality”, can only be a preliminary answer to the problem of the radical concealment. Through a destructive interpretation of the passages on the “they” and the “death” in Being and Time, we will show finally that despite the predominance of hermeneutic thinking in the phenomenology of Dasein, its concrete phenomenological analysis has already highlighted certain essential existential phenomena that should have broken the circular movement of Dasein’s existence.