Thought is one of those fruits which is not long ripe before decay begins to set in.

Charles S. Peirce, MS 606

Cornelis (Kees) de Waal is Professor of Philosophy at Indiana University Indianapolis and Editor-in-Chief of the Transactions of the Charles S. Peirce Society

Kees de Waal studied economics and philosophy in The Netherlands at Erasmus University Rotterdam. After a brief stint as editor/journalist for the biweekly Dutch engineering magazine Ingerieurskrant, he emigrated to the US to study the philosophy of Charles Sanders Peirce with Susan Haack at University of Miami.

de Waal (right) with his favorite
debating partner.

In 1998, he moved to Indiana to join the Peirce Edition Project. For the next thirteen years he worked on the Writings of Charles S. Peirce: A Chronological Edition, including the reorganization and dating of the vast trove of surviving Peirce manuscripts, most of which are kept at Harvard University. During his tenure at the Peirce Edition Project, volumes 6 and 8 were published. In 2011, with volume 9 nearing completion, he left the Project to take the helm of the Transactions of the Charles S. Peirce Society. 

Working on the Peirce manuscripts in 2004.

De Waal’s research centers on various aspects of the work of Charles Peirce, (mostly his phenomenology, logic, and ideas about science and scientific inquiry) and on the philosophical tradition called pragmatism, especially Peirce’s interpretation of it.

Pragmatism is best understood as a distinctive approach to philosophy. It originated from the concern that many of our most fundamental philosophical and scientific concepts—such as truth, reality, mind, self, space, time, force, freedom, rights, soul, and God—are either meaningless or deeply confused.
In response, pragmatists developed a method aimed at making our ideas clear, while avoiding flawed extremes, like dogmatism or relativism.