Principles of Instrumental Logic : John Dewey's Lectures in Ethics and Political Ethics, 1895-1896

John Dewey delivered two sets of related lectures at the University of Chicago in the fall quarter 1895 and the spring quarter 1896. Designed for graduate students, the lectures show the birth of Dewey’s instrumentalist theory of inquiry in its application to ethical and political thinking.

From 1891 through 1903, Dewey attempted to develop a revolutionary experimentalist approach to ethical inquiry designed to replace the more traditional ways of moral theorizing that relied on the fixed moral knowledge given in advance of the situations in which they were applied. In the lectures on the logic of ethics, he sets forth and defends the view that the "is" in a moral judgment such as "This is good" is a coordinating factor in an inquiry. Although the subject matter of the lectures is highly technical, its significance is paramount. It provides the key to and opens the door for a theory that preserves the difference between strictly scientific inquiry and moral inquiry even while it provides a "scientific treatment" of the latter.

The lectures on political ethics apply Dewey’s theory of inquiry to the logical problems created by three disciplines designated as politics, economics, and ethics, which appear to have separate and antagonistic subject matters. Politics is a quest for political power; economics is based on self-interest; ethical inquiry is about morality. These lectures carry on the experimental theory of inquiry developed in the previous lectures by explaining how the distinction between these subject matters can be developed without the antagonism.

These lectures enable us to make much better sense of Dewey’s later works on moral and political topics.

Donald F. Koch is a professor of philosophy at Michigan State University. He has edited John Dewey’s Lectures on Psychological and Political Ethics: 1898 and Lectures on Ethics: 1900–1901 and is the coeditor (with Warren G. Samuels) of Lectures by John Dewey: Moral and Political Philosophy 1915–1916.