1Cf. William J. Richardson,Heidegger: Through Phenomenology to Thought , The Hague: Martinus Nijhoff,1967 , pp. x~xiii.
2Cf. Jacques Taminiaux,Heidegger and the Project of Fundamental Ontology, Albany:State University of New York Press, 1991, p. 116;p. 127 ;pp. 129~137;p. 131 ;p. 132.