Munroe, though, assumes the opposite: liberty, in this case the freedom of speech, is an artifact of law, only stretching as far as government action, and no further. Pat Kerr, who wrote a critique of this comic on Medium in 2016, argued that this was the exact wrong way to think about free speech: Coherent definitions of free speech are actually rather hard to come by, but I would personally suggest that it’s something along the lines of “the ability to voluntarily express (and receive) opinions without suffering excessive penalties for doing so”. This is a liberal principle of tolerance towards others. It’s not an absolute, it isn’t comprehensive, it isn’t rigorously defined, and it isn’t a law. What it is is a culture.