I am no supporter of the separation of Church and state, but this quote seems fabricated. Here is the information about the actual letter. Bizarre that Jefferson should be relied on for interpretation, though. Justice Rehnquist debunked this nonsense in Wallace v. Jaffree:
It is impossible to build sound constitutional doctrine upon a mistaken understanding of constitutional history, but unfortunately the Establishment Clause has been expressly freighted with Jefferson's misleading metaphor for nearly 40 years. Thomas Jefferson was of course in France at the time the constitutional Amendments known as the Bill of Rights were passed by Congress and ratified by the States. His letter to the Danbury Baptist Association was a short note of courtesy, written 14 years after the Amendments were passed by Congress. He would seem to any detached observer as a less than ideal source of contemporary history as to the meaning of the Religion Clauses of the First Amendment.
Yet the Alabama Constitution indicates that no particular religion (meaning including Christianity, and Judeo-Christianity) be given legal preference.
You can't erect the 10 commandments in a courthouse saying that the country's laws were founded on them, and then say you're not giving them preference.
But then again, this case is full of contradictions. Anything involving Roy Moore, the ACLU, and the Souther Poverty Center would. The clowns deserve each other, but they made a mockery of our laws in the process.
People who can't see the irony in what Roy Moore and his opponents did to each other are blind.
The falicy in Rehnquist's argument in Wallace v. Jaffree is his premise. The name of the doctrine of Separation of Church and State may have come from Jefferson's letter, but the legal substance was derived from James Madison's Memorial and Remonstrance of 1785 and the Virginia Statute for Religious Freedom.
Jefferson wrote the first draft of the Statute for Religious Freedom, Madison revised it, the Virginia General Assembly made a few changes and finally entacted it 1786.
FS
Justice Rehnquist wrote that it is impossible to build sound doctrine upon a mistaken understanding of constitutional history. He then proceeds to found a new doctrine on the frivolous premise that the legal substance of the establishment clause was derived from a letter that President Thomas Jefferson wrote in 1802 to the Danbury Baptists.
Would some one please point out to me the First Amendment legal principles, rules and theories that were derived from Thomas Jeffersons letter? Rehnquist once said that 99% of the meaning of the religion clauses is determined by the way you define the word religion.
The definition of religion, for First Amendment purposes, was derived from the Memorial and Remonstrance written by James Madison. See Reynolds v. U. S. (1878). That would leave only 1% of the meaning of the establishment clause that could have possibly been derived from Jeffersons letter.
When Rehnquist read the establishment clause, I think he was sniffing glue with Clarence Thomas.