The philosophical parting of the ways between Heidegger’s Fundamental ontology and the Philosophical anthropology of Plessner is well known. Today, however, after the publication of the »Schwarze Hefte«, new aspects of their differences come to light. Accordingly, this article focusses on the purpose of death discussed in »Die Stufen des Organischen« as a genuine thought Plessner inscribed into 20th century philosophy. It argues that the most peculiar difference is to be found in Plessner’s view on death not as a simple element of life but as an external phe- nomenon. In contrast to Plessner, Heidegger’s »Schwarze Hefte« seem to present more of an eschatology than a systematical approach to human self and world.