Many economists tend to focus their attention only in the economic part of human action, excluding other elements that explain the reasons why individuals interact the way they do. In this conference, Peter Boettke talks about the situation of the economic science in the twentieth century and comments on how it came to be what it currently is. He explains the efforts of certain institutions around the world to keep economics in the right path; organizations that gave birth to some of the most significant and important literature in the liberal tradition. He mentions several of the most prominent thinkers in this field and describes how they came to develop their best ideas, especially among evolutionary psychology regarding the economic scope.