Columbia subject headings:
Harvard subject headings:
Heidegger, Martin, 1889-1976
Object (Philosophy).
Subject (Philosophy).
Weil, Simone, 1909-1943
Princeton subject headings:
Act (Philosophy)
Ding an sich.
Heidegger, Martin, 1889-1976.
Object (Philosophy)
Ontology.
Relation (Philosophy)
Subject (Philosophy)
Weil, Simone, 1909-1943.