"Reason & experience both forbid us to expect that National morality can prevail in exclusion of religious principle.
'Tis substantially true, that virtue or morality is a necessary spring of popular government. The rule indeed extends with more or less force to every species of Free Government. Who that is a sincere friend to it, can look with indifference upon attempts to shake the foundation of the fabric."
In other words, without religious principle, there can be no National morality.