Columbia subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900--Ethics--Congresses.
Schopenhauer, Arthur, 1788-1860--Ethics--Congresses.
Harvard subject headings:
Ethics, Modern--19th century--Congresses.
Nietzsche, Friedrich Wilhelm, 1844-1900--Congresses.
Nietzsche, Friedrich Wilhelm, 1844-1900--Ethics--Congresses.
Schopenhauer, Arthur, 1788-1860--Congresses.
Schopenhauer, Arthur, 1788-1860--Ethics--Congresses.
Princeton subject headings:
Nietzsche, Friedrich Wilhelm, 1844-1900--Ethics--Congresses.
Schopenhauer, Arthur, 1788-1860--Ethics--Congresses.