When I was writing The Moral Arc, I found my life-long libertarianism challenged on so many fronts that I began to reconsider my politics and to look for a new label, one that better described what I came to believe was the right balance between Left and Right, between liberalism and conservatism. I believe I may have found it in classical liberalism, a defense of which follows in this essay, originally published in the online magazine Quillette.