Is libertarianism a progressive doctrine, or a reactionary one? Does libertarianism promise to liberate the poor and the marginalized from the yoke of state oppression, or does talk of "equal liberty" obscure the ways in which libertarian doctrines serve the interests of the rich and powerful? Through an examination of the history of libertarianism, this book argues that the answer is (and always has been): both. In this book we explore the neglected 19th century roots of libertarianism to show that it emerged first as a radical and progressive doctrine. Libertarianism took a conservative turn in the 20th century primarily as a reaction against the rise of state socialism. Now, with international communism no longer a threat, libertarianism is in the midst of an identity crisis, with progressive and reactionary elements struggling to claim the doctrine as their own, most notably on issues of race. This book tells the history of libertarianism through an examination of six defining themes: private property, skepticism of authority, free markets, individualism, spontaneous order, and individual liberty. In doing so, it reveals that history to be longer, wider, and considerably more diverse than is commonly believed. It is a history full of internal tensions, idiosyncratic personalities, and surprising arguments. It is a history of the men (and sometimes women) who called themselves: The Individualists"--