Not voiced or expressed
But it will be noticed that the second half of the definition in the text - "from the general premisses of all reasoning" - is left unexpressed.
What could they possibly do but cling to their priest with a "blind and unexpressed faith" ?
XIV to XVIII, The confluent or unexpressed six somites of the metasoma.
There was within him a deep unexpressed conviction that all would be well, but that one must not trust to this and still less speak about it, but must only attend to one's own work.
The presence of the problem of man's free will, though unexpressed, is felt at every step of history.