There is an epigraph, poem or similar, where something like
Der Tod ist die letzte Feste dem Freien, deren Tor immer offen steht.
is written (but unfortunately I do not remember the details). What is the title/author/accurate text of that epigraph/poem/..., please? (I suspect the author to be Ernst Jünger.)
Edit: Olaf's answer was not the text I thought about, but it is interesting to see this, thanks! "Draußen vor der Tür" was created at the end of 1946/start of 1947, while "Das Abenteuerliche Herz" is from 1938. Thus W. Borchert might have known E. Jünger's text.