M. Slotkin, Johns Hopkins University Press, 1981) and Rhétorique de la poésie (1977). Stephen Toulmin was a philosopher whose models of argumentation have had great influence on modern rhetorical theory. His Uses of Argument is an important text in modern rhetorical theory and argumentation theory. Richard Vatz is a rhetorician responsible for the salience-agenda/meaning-spin conceptualization of rhetoric, later revised (2014) to an "agenda-spin" model, a conceptualization which emphasizes persuader responsibility for the agenda and spin he/she creates. His theory is notable for its agent-focused perspective, articulated in The Only Authentic Book of Persuasion (Kendall Hunt), derived from the Summer, 1973 Philosophy and Rhetoric article, "The Myth of the Rhetorical Situation". Richard M. Weaver was a rhetorical and cultural critic well known for his contributions to the new conservatism. He focused on the ethical implications of rhetoric and his ideas can be seen in "Language is Sermonic" and "The Ethics of Rhetoric". According to Weaver there are four types of argument, and through the argument a person habitually uses the critic can see the rhetorician's worldview. Those who prefer the argument from genus or definition are idealists. Those who argue from similitude, such as poets and religious people, see the connectedness between things. The argument from consequence sees a cause and effect relationship. Finally the argument from circumstance considers the particulars of a situation and is an argument preferred by liberals. Gloria Anzaldúa was a "Mestiza" and "Borderland" rhetorician, as well as a Mexican-American poet and pioneer in the field of Chicana lesbian feminism. Mestiza and Borderland rhetoric focused on ones' formation of identity, disregarding societal and discourse labels. With "Mestiza" rhetoric, one viewed the world as discovering one's "self" in others and others' "self" in you. Through this process, one accepted living in a world of contradictions and ambiguity. Anzaldua learned to balance cultures, being Mexican in the eyes of the Anglo-majority and Indian in a Mexican culture. Her other notable works include: Sinister Wisdom, Borderlands/La Fronters: The New Mestiza, and La Prieta. Gertrude Buck was one of the prominent female rhetorical theorists who was also a composition educator. Her scholastic contributions such as "The present status of Rhetorical Theory" to inspire the egalitarian status of hearers-speakers to achieve the goal of communication. Another piece that she edited with Newton Scott is "Brief English Grammar" which troubled the common prescriptive grammar. This book received a lot of praise and critiques