This article is an adaptation of the sixteenth Lewis A. Coser lecture, given virtually in 2021 for the American Sociological Association Meetings. In this article, I pay tribute to Lewis and Rose Laub Coser by engaging with their past work, which inspired a theoretical provocation about what it means to theorize from the margins. I specifically address the questions of who gets to be a theorist and what kinds of theoretical work get marginalized. I outline the process of epistemic oppression (...) involved in trying to publish marginal ideas in mainstream journals. I argue that the relationship between mainstream sociology and what I refer to as “marginal” requires a relational perspective that situates both marginalized scholars and their scholarship in the broader discipline of sociology and examines the epistemic oppression of their theories regardless of their sometimes-powerful institutional positioning in highly ranked departments or as leaders within various professional associations. (shrink)