As a strict Unitarian in the mode of Theophilus Lindsey, Joseph Priestley, and Thomas Belsham, I am in complete agreement with Mr. Jefferson’s words regarding Calvin (assuming these quotes to be genuine):
“I can never join Calvin in addressing his god. He was indeed an Atheist, which I can never be; or rather his religion was Daemonism. If ever man worshipped a false god, he did. The being described in his 5 points is not the god whom you and I acknowledge and adore, the Creator and benevolent and governor of the world, but a daemon of malignant spirit. It would be more pardonable to believe in no god at all, than to blaspheme him by the atrocious attributes of Calvin.”
—Jefferson, Letter to John Adams, April 11, 1823.
The Presbyterian clergy are loudest, the most intolerant of all sects, the most tyrannical, and ambitious; ready at the word of the lawgiver, if such a word could be now obtained, to put the torch to the pile, and to rekindle in this virgin hemisphere, the flames in which their oracle Calvin consumed the poor Servetus, because he could not find in his Euclid the proposition which has demonstrated that three are one, and one is three, nor subscribe to that of Calvin that magistrates have a right to exterminate all heretics to Calvinistic creed.
—Jefferson, letter to William Short, April 13, 1820.