Open Secret, The

Open Secret, The, the secret that lies open to all, but is seen into and understood by only few, applied especially to the mystery of the life, the spiritual life, which is the possession of all.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Opal * Open, Sesamë
Omphalë
Omsk
Onega, Lake
Onomatopœia
Ontario
Ontario, Lake
Ontology
Onyx
Oosterzee, Jan Jakob van
Opal
Open Secret, The
Open, Sesamë
Opera
Opera Bouffe
Ophelia
Ophicleide
Ophir
Ophites
Opie, John
Opinicus
Opitz, Martin von