Do you believe in reality?

The « Science War » between some scientists and « science studies » oblige to reconsider the basic philosophy of science that has been invented in the past. This paper explores the connection between a quest for absolute truth, the political quest for disciplining the people and, finally, the invention of a mind seieng at the world. Poltics, psychology and epistemology offer a joint configuration which is now being dismantled. It is within this configuration that the defenders of science as well as its ennemies are working. The paper tries to show the philosophical genealogy of that configuration and how it can be replaced by another, which implies a different politics, psychology and theory of science.