Notwithstanding the general progress made within the two last centuries in favour of this branch of liberty, and the full establishment of it in some parts of our country, there remains in others a strong bias towards the old error, that without some sort of alliance or coalition between Government and Religion neither can be duly supported. Such, indeed, is the tendency to such a coalition, and such its corrupting influence on both the parties, that the danger cannot be too carefully guarded against. And in a Government of opinion like ours, the only effectual guard must be found in the soundness and stability of the general opinion on the subject. Every new and successful example, therefore, of a perfect separation between the ecclesiastical and civil matters, is of importance; and I have no doubt that every new example will succeed, as every past one has done, in showing that religion and Government will both exist in greater purity the less they are mixed together. It was the belief of all sects at one time that the establishment of Religion by law was right and necessary; that the true religion ought to be established in exclusion of every other; and that the only question to be decided was, which was the true religion. The example of Holland proved that a toleration of sects dissenting from the established sect was safe, and even useful. The example of the colonies, now States, which rejected religious establishments altogether, proved that all sects might be safely and even advantageously put on a footing of equal and entire freedom; and a continuance of their example since the Declaration of Independence has shown that its success in Colonies was not to be ascribed to their connection with the parent country. if a further confirmation of the truth could be wanted, it is to be found in the examples furnished by the States which had abolished their religious establishments. I cannot speak particularly of any of the cases excepting that of Virginia, where it is impossible to deny that religion prevails with more zeal and a more exemplary priesthood than it ever did when established and patronized by public authority. We are teaching the world the great truth, that Governments do better without kings and nobles than with them. The merit will be doubled by the other lesson: the Religion flourishes in greater purity without, than with the aid of Government (Letter to Edward Livingston, July 10, 1822).