bb & A-G: what is your "take" on the Ratzinger statement in #64, please?
Creation week is described in Genesis 1 in less than 40 sentences. Yet the books written about physical cosmology fill rooms in libraries.
The relationship between them is like the relationship between the U.S. Constitution and the myriad IRS publications explaining the U.S. Tax Code (26 U.S.C.) - the former speaks in broad concepts and the latter, while being derived from it, is expressed in exacting detail with a different purpose in mind - in the case of the IRS, not to leave any money on the table.
I would however quibble over his (or the translator's) use of the term "religious book" because Scriptures contain the words of God which are spirit and life. They are not in the same category with any old religious book, e.g. the Koran, commentaries, hymnals, ancient manuscripts.
It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, [they] are spirit, and [they] are life. - John 6:63