Werner Callebaut (October 7, 1952 – November 6, 2014) was a professor at the University of Hasselt, scientific director of the Konrad Lorenz Institute for Evolution and Cognition Research, editor and chief of Biological Theory, and president of The International Society for the History, Philosophy, and Social Studies of Biology.

During his undergraduate studies at the University of Ghent, he was highly influenced by Leo Apostel and Etienne Vermeersch.

In 1983, he received a Ph.D. in philosophy from the University of Ghent with a dissertation entitled Contribution to a General Theory of Rationality on Evolutionary Foundations—With an Application to the Organization of Scientific Knowledge.

In 2013, he was elected president of The International Society for the History, Philosophy, and Social Studies of Biology (ISHPSSB).

He then wove together the interviews into conversations on these key topics in the philosophy of science.