Columbia subject headings:
Civilization, Modern--Greek influences--Congresses.
Philosophy, Ancient--Congresses.
Silence (Philosophy)--Congresses.
Silence in art--Congresses.
Silence in literature--Congresses.
Silence in music--Congresses.
Silence--Religious aspects--Christianity--Congresses.
Harvard subject headings:
Civilization, Modern--Greek influences--Congresses.
Silence (Philosophy)--Congresses.
Silence in art--Congresses.
Silence in literature--Congresses.
Princeton subject headings: