Put down the hookah, Walt. It's distorting your sense of reality.
I have twice quoted Jefferson on the subject of secession, defined as legal separation of parts of the union on their desire to separate. You have willfully ignored them both. Here it is again though:
"The future inhabitants of the Atlantic & Missipi States will be our sons. We leave them in distinct but bordering establishments. We think we see their happiness in their union, & we wish it. Events may prove it otherwise; and if they see their interest in separation, why should we take side with our Atlantic rather than our Missipi descendants? It is the elder and the younger son differing. God bless them both, & keep them in union, if it be for their good,but separate them, if it be better." - Jefferson, August 12, 1803
You've seen all this before.
Yes Walt, and its still an incoherently selected cut n' paste bonanza that may as well have been achieved by pinning various Jefferson texts to a wall and proceeding to throw darts at them under the shade of a blindfold. Not one of those quotes, Walt, supports anything you claim it to support. They might as well be picked at random from a hat.
They could be. They all support the same thing -- an immovable attachment to the national union.
Your quote from TJ, on the other hand, says not a word about the legality of secession under U.S. law, and you won't get Jefferson or any framer to say that.
Walt