Columbia subject headings:
Ethics, Modern--20th century.
Religious thought--20th century.
Wittgenstein, Ludwig, 1889-1951--Ethics.
Wittgenstein, Ludwig, 1889-1951--Religion.
Harvard subject headings:
Ethics, Modern--20th century.
Religious thought--20th century.
Wittgenstein, Ludwig, 1889-1951--Ethics.
Wittgenstein, Ludwig, 1889-1951--Religion.
Princeton subject headings:
Ethics.
Wittgenstein, Ludwig, 1889-1951--Religion.
Wittgenstein, Ludwig, 1889-1951.