In one of his letters Thomas Jefferson remarked that in matters of religion "the maxim of civil government" should be reversed and we should rather say, "Divided we stand, united, we fall." In this remark Jefferson was setting forth with classic terseness an idea that has come to be regarded as essentially American: the separation of Church and State.
This idea was not entirely new; it had some precedents in the writings of Spinoza, Locke, and the philosophers of the European Enlightenment. It was in the United States, however, that the principle was first given the force of law and gradually, in the course of two centuries, became a reality. [ICJS Research] Read more [via Political Correctness Watch]