A quote from the indispensable man himself on the necessity of religion and morality in civic life

"Of all the dispositions and habits which lead to political prosperity, Religion and morality are indispensable supports.  In vain would that man claim the tribute of Patriotism, who should labour to subvert these great Pillars of human happiness, these firmest props of the duties of Men and citizens.  The mere Politician, equally with the pious man ought to respect and to cherish them.  A volume could not trace all their connections with private and public felicity."

- George Washington (1732-1799), Farewell Address, September 19, 1796, quoted in The Founders on Religion:  A Book of Quotations, ed. by James H. Huston (Princeton:  2005), pg. 193.