Moral and political theorists who espouse Egalitarianism and Marxism tend to assume that it is extremely hard, if not impossible, to put forward an original and plausible moral justification of classical liberalism. Horacio Spector is concerned to build just such a justification. He reconstructs and then criticizes a familiar approach to the moral foundations of classical liberalism which rests on the maximization of negative freedom, and then frames an
alternative theory centered in the obligation to protect positive freedom.