 So Frederick Douglass, I think, fits in the libertarian tradition in so far as he was one of the great defenders of self-ownership in the American political tradition. So Douglass, born into slavery, develops a critique of slavery and defends self-ownership as the antithesis of the slave experience. So I think one of the things that's remarkable about Douglass' contribution to the tradition is that he relies on his own experiences as a slave to defend the idea of self-ownership. And he also reimagines previous articulations of self-ownership in a way that is more comprehensive. He sort of identifies not just the economic dimension of self-ownership, but all sorts of other aspects of human life that he thinks are essentially protected by the idea of self-ownership, and also he has a very universal understanding of the idea. So for a 19th century thinker, he's quite radical in terms of applying the concept of self-ownership to women, to immigrants, and obviously to African-Americans. I think today the most important substantive contribution that Douglass makes is his ability to combine a kind of classical liberal concern for self-ownership with a very robust sense of what human beings owe to one another. So I think Douglass is a very important thinker insofar as he reminds us that the promise of liberty cannot be achieved outside of strong communities where people care about one another. So I think that it's hard to apply Douglass' ideas to contemporary policy issues in a really concrete way, and I try to avoid doing that, but I do think that the spirit of his ideas, this combination of liberty and responsibility, is something that's relevant to just about any question of political theory and practice that comes up today.