John Adams - full quote

"But should the people of America once become capable of that deep simulation towards one another, and towards foreign nations, which assumes the language of justice and moderation while it is practicing iniquity and extravagance and displays in the most captivating manner the charming pictures of candor, frankness, and sincerity, while it is rioting in rapine and insolence, this country will be the most miserable habitation in the world; because we have no government armed with power capable of contending with human passions unbridled by morality and religion. Avarice, ambition, revenge, or gallantry, would break the strongest cords of our Constitution as a whale goes through a net. Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other." 


 --John Adams
To the Officers of the First Brigade of the Third Division of the Militia of Massachusetts, 1798 

John Adams -- the full quote, of which we tend only to see the last two sentences noted. 

This seems to be being proven true today.