How Subtle Differences Between These Two Big Ideas Changed Our World [More]
I'm mostly in agreement but I don't get how "a positive liberty" is "an obligation imposed upon you by the state." To me, it would be an obligation imposed upon government to do things like "guarantee[ing] to every State in this Union a Republican Form of Government," and achieving ends articulated in the Preamble through the proper use of delegated powers.
I don't have time to argue the point, but do feel free to enlighten me in comments.