Richard Weaver's insights into the nature of rhetoric, and the relationship between rhetoric and dialectic, in particular, are priceless and timeless contributions to rhetorical theory, in my view.
A Rhetorician's Treasury of Richard M. Weaver Reflections on Weaverian Criticism Selections from Weaver's Chapter on Argumentation Weaver and Newman Weaver's "Distinction & Hierarchy" Weaver's "The Cultural Role of Rhetoric" Weaver on Cultural Style