Definition of EMPIRICAL. 1: originating in or based on observation or experience 2: relying on experience or observation alone often without due
It is logically impossible to maintain self Representative government without it.
"if the sense of religious obligation desert the oaths which are the instruments of investigation in courts of justice ? And let us with caution indulge the supposition that morality can be maintained without religion. Whatever may be conceded to the influence of refined education on minds of peculiar structure, reason and experience both forbid us to expect that national morality can prevail in exclusion of religious principle."
Secular and civilized is non sequitur of logic.
The truly sad part is most Americans have bought into the lie that our Constitution is a 'secular' document. Nope it is just that people of Faith are called to service of God's Gifts to each individual not power.