Washington on politics and religion

From an article in the Sacramento Bee this past week comes this quote from George Washington's farewell address:

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 labor 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.

This makes the important but subtle point that religious motives should certainly inform and guide political behaviour, even if no particular religion may be officially endorsed by the state. In the context of Mitt Romney's campaign, this suggests that he should make clear the ways in which his faith will inform and guide his policies while at the same time making clear that he will "render unto God that which is God's, and render unto Caesar that which is Caesar's".