Unfortunately, the first Jefferson quote Williams uses in the second graf doesn't support his point. Jefferson meant that, if someone wanted to sunder the union or substitute a nonrepublican form of government, he should be left alone, as he would do no harm among an informed electorate. I.e., Jefferson was confident that such views would be rejected.
Other than that, good article. Only I wouldn't call Lincoln "ruthless" -- other words come to mind, but I think that one is too dark. He was, however, very determined, and I think he did take everyone on a trip they'd have refused, had they known in 1860 what he had in mind for 1861. In my humble opinion.