Abstract
We will explain why the Treatise on Basic Philosophy is a metascientific work and not a philosophical one. We will then argue that this meta-science is part of a long process of naturalization of thought that begins at the end of the Middle Ages to give birth to the scientific thought of the study of the world. For Bunge, naturalization takes the form of the naturalization of the general thought which makes it possible to replace philosophical general discourse with scientific gen-eral discourse. Finally, this naturalization of general discourse should not be con-fused with the projects of naturalization of philosophy, in particular one of many projects of scientific or naturalized metaphysics known as ontic structural real-ism.