Columbia subject headings:
Harvard subject headings:
Christian philosophy--Congresses.
Philosophers--Germany--Congresses.
Philosophy, German--20th century--Congresses.
Pieper, Josef, 1904-1997--Congresses.
Princeton subject headings:
Balthasar, Hans Urs von, 1905-1988.
Benedict XVI, Pope, 1927-2022.
Eliot, T. S. (Thomas Stearns), 1888-1965.
Goethe, Johann Wolfgang von, 1749-1832.
Guardini, Romano, 1885-1968.
Lewis, C. S. (Clive Staples), 1898-1963.
Newman, J. H. (John Henry), 1858-
Pieper, Josef, 1904-1997.
Thomas, Aquinas, Saint, 1225?-1274.