A leading figure of the Scottish Enlightenment, George Campbell (1719-96) began to write what was to become his most famous work, The Philosophy of Rhetoric, soon after his ordination as a minister in 1748. Later, as a founder of the Aberdeen Philosophical Society, he was able to present his theories, and these discourses were eventually published in 1776. In the spirit of the Enlightenment, Campbell combined classical rhetorical theory with the latest...