This essay makes a distinction between the roles that activists and social critics can play in democratic societies and defends the separate tasks of a non-activist social critic. Drawing on Ralph Waldo Emerson’s writings, I argue that non-activist social critics are better situated than activists to reach certain audiences, cultivate certain democratic capacities, and preserve their audience’s agency while doing so. In Emerson’s case, his concerns about his activist contemporaries led him to craft new ways of critically engaging his peers. At the same time, as Emerson’s life also illustrates, non-activist critics are limited by their roles and must forgo some of their distinctive advantages in order to do activist work. Clarifying the scope of the social critic’s role in this way helps critics to draw on the benefits of their position and avoid overstepping its constraints, thereby allowing them to more effectively promote political reform.