President Harry Truman, Public Papers of the President of the United States: Harry S. Truman – 1951 U.S. Gov. 1966 p1063

Democracy is, first and foremost, a spiritual force, it is built upon a spiritual basis – and on a belief in God and an observance of moral principle. And in the long run only the church can provide that basis. Our founder knew this truth – and we will neglect it at our peril.