Columbia subject headings:
Life.
Ontology.
Philosophical anthropology.
Philosophy, German--19th century.
Philosophy, German--20th century.
Philosophy, Modern--19th century.
Philosophy, Modern--20th century.
Harvard subject headings:
Life
Ontology.
Philosophical anthropology.
Philosophy, German--19th century.
Philosophy, German--20th century.
Philosophy, Modern--19th century.
Philosophy, Modern--20th century.
Princeton subject headings:
Life.
Ontology.
Philosophical anthropology.
Philosophy, German--19th century.
Philosophy, German--20th century.
Philosophy, Modern--19th century.
Philosophy, Modern--20th century.