"They [Founding Fathers] similarly felt free to define God according to the dictates of their own reason and to reject Christian doctrines which did not seem to them to be rational..Theistic rationalists generally disdained doctrines or dogmas. They found them to be divisive, speculative, and ultimately unimportant since many roads lead to God."
Granted, there may have been some framers who denied the supernatural; Thomas Jefferson, and Thomas Paine come to mind, however Alexander Hamilton is not one of them. Is Original Sin a divisive doctrine? Many would claim it is a fact of everyday life.
"And making the proper deductions for the ordinary depravity of human nature, the number must be still smaller of those who unite the requisite integrity with the requisite knowledge." [bold face mine]
-Hamilton, FEDERALIST No. 78
Thus, unlike, the rationalists, he did not believe learning and the enlightenment would cause virtue, but only that the depravity would change its form. Hamilton knew he couldn't change his condition, because it was inherrant:
"As riches increase and accumulate in few hands; as luxury prevails in society; virtue will be in a greater degree considered as only a graceful appendage of wealth, and the tendency of things will be to depart from the republican standard. This is the real disposition of human nature: It is what, neither the honorable member nor myself can correct. It is a common misfortune, that awaits our state constitution, as well as all others..It is a harsh doctrine, that men grow wicked in proportion as they improve and enlighten their minds. Experience has by no means justified us in the supposition, that there is more virtue in one class of men than in another. Look through the rich and the poor of the community; the learned and the ignorant. Where does virtue predominate? The difference indeed consists, not in the quantity but kind of vices, which are incident to the various classes; and here the advantage of character belongs to the wealthy. Their vices are probably more favorable to the prosperity of the state, than those of the indigent; and partake less of moral depravity." [bold face mine]
-Alexander Hamilton, New York Ratifying Convention 21 June 1788. Papers 5:36--37, 40--43
Gouverneur Morris; the Penman of the Constitution, cannot be considered a Rationalist either. He never exalted reason over revelation; however, he did attack it, hence Morris lived in Paris at the height of the French Revolution:
"Those who slaughtered their prince and made havoc of each other; those who endeavored to dethrone the King of Heaven and establish the worship of human reason, who placed, as representative on the altar which piety had dedicated to the holy virgin, and fell down and paid to her their adoration, were, at length, compelled to see and to feel, and, in agony, to own that there is a God. I cannot proceed. My heart sickens at the recollection of those horrors which desolated France." [bold face mine]
-An oration, delivered on Wednesday, June 29, 1814, at the request of a number of citizens of New-York : in celebration of the recent deliverance of Europe from the yoke of military despotism.
What is interesting in Morris' quote is his mention of the Holy Virgin. If Morris didn't believe what he wrote, why even mention it? Also, this quote proves Morris could not be a rationalist, as he says the King of Heaven is superior to reason, that the French tried to establish Reason over Christianity. One can only imagine what Morris saw in that dreadful time.
Morris, like Hamilton, Madison, Washington, et al. believed in human depravity:
"Your history of the two Barons is very amusing ; but when
you take occasion to pity the infirmity of human nature, be-
cause of their attachment to a trivial decoration, you assail
the wisdom of Providence in his moral government of the
world." [bold face mine]
-TO JOHN PARISH. February 18th, 1806.
Morris claimed to be a Christian, not a rationalist:
"As a good Christian I pray not to be led into it..."
-The diary and letters of Gouverneur Morris, Minister of the United States to France. Vol II.