This two-volume set addresses freedom of association, one of the central liberties associated with classical liberalism. The concept of freedom of association has been largely neglected by political and moral philosophers over the past several centuries, despite the fact that the freedom to associate with fellow citizens (and non-citizens) is an implication of almost every version of liberalism capaciously considered.  These two volumes take freedom of association seriously both as a theoretical concept and as an integral part of any genuine liberal regime. This first volume considers freedom of association from a theoretical perspective. It considers the freedom of association in conversation with negative liberty, moral pluralism, communitarianism, polycentric democracy, and republicanism.