My response (“Liberty is Liberty“) to the provocative essay (“Conceptions of Freedom“) by David Schmidtz and Jason Brennan is now online.
I’m mostly through their very interesting (not in the British sense of the word, but the American sense) book A Brief History of Liberty. I disagree robustly with the thesis of the essay in Cato Unbound (which is drawn from the introduction to A Brief History of Liberty), which does not stop me from enjoying thoroughly their book.