Well before the current age of discourse, deconstruction, and multiculturalism, Richard McKeon propounded a philosophy of pluralism showing how "facts" and "values" are dependent on diverse ways of reading texts. This book is a transcription of an entire course, including both lectures and student discussions, taught by McKeon. As such, it provides an exciting introduction to McKeon's conception of pluralism, a central aspect of neo-Pragmatism, while demonstrating how pluralism works in a classroom setting.

In his lectures, McKeon outlines the entire history of Western thinking on the sciences. Treating the central concepts of motion, space, time, and cause, he traces modern intellectual debates back to the ancient Greeks, notably Plato, Aristotle, Democritus, and the Sophists. As he brings the story of Western science up to the twentieth century, he uses his fabled semantic schema (reproduced here for the first time) to uncover new ideas and observations about cosmology, mechanics, dynamics, and other aspects of physical science.

Illustrating the broad historical sweep of the lectures are a series of discussions which give detail to the course's intellectual framework. These discussions of Plato, Aristotle, Galileo, Newton, and Maxwell are perhaps the first published rendition of a philosopher in literal dialogue with his students. Led by McKeon's pointed questioning, the discussions reveal the difficulties and possibilities of learning to engage in serious intellectual communication.

As a philosopher, Richard McKeon spent his career developing Pragmatism in a new key, specifically by tracing the ways in which philosophic problems arise in fields other than philosophy—across the natural and social sciences and aesthetics—and showed the ways in which any problem, pushed back to its beginning or taken to its end, is a philosophic problem. The roots of this book, On Knowing—The Social Sciences, are traced to McKeon’s classes where he blended philosophy with physics, ethics, politics, history, and aesthetics.

This volume—the second in a series—leaves behind natural science themes to embrace freedom, power, and history, which, McKeon argues, lay out the whole field of human action. The authors McKeon considers—Hobbes, Machiavelli, Spinoza, Kant, and J. S. Mill—show brilliantly how philosophic methods work in action, via analyses that do not merely reduce or deconstruct meaning, but enhance those texts by reconnecting them to the active history of philosophy and to problems of ethics, politics, and history. The waves of modernism and post-modernism are receding. Philosophic pluralism is now available, fully formulated, in McKeon’s work, spreading from the humanities to the social sciences.