The defense of free discussion that I’m working on is not your typical “free speech” book. It may seem constricting that in many ways a response to and elaboration on Mill’s “On Liberty” (“Liberty, Revisited” is a possible title). But like Mill, I focus not on government censorship but social coercion—an enormously complicated and rich subject that is really the core of the issue and implicates the work of many other thinkers and writers. Here’s a list (in no particular order) of some of the topics I’ll be covering: