Columbia subject headings:
Harvard subject headings:
Heraclitus, of Ephesus--Criticism and interpretation.
Nietzsche, Friedrich Wilhelm, 1844-1900--Criticism and interpretation.
Play (Philosophy)
Princeton subject headings:
Heraclitus, of Ephesus--Criticism and interpretation.
Nietzsche, Friedrich Wilhelm, 1844-1900--Criticism and interpretation.
Play (Philosophy)