The classical Reason is too often linked with the conquest of Nature and with modern scientific and technological world. But Bruno Pinchard shows that this kind of philosophizing is a source of freedom in the relation that is endeavored to be established between Faith and Rationality. The classical Reason is equidistant from the might of science and the dogmas of faith. This Reason is an actualization of pure thought. In this perspective, the author declares 12 propositions that would need to (...) be developed with historical proves to be fully justified. Meanwhile, these first steps have a systematic aim, like all the conceptual constructions of classical thought. The paper is concluded with a short “Coda” about the necessity of love to give strength to the reason to achieve ultimate goals of the latter. The translation is made according to the text which is a revised and updated version of the article: Pinchard B. Quelques principes de raison classique. L’Archicube, n° 24, juin 2018, pp. 156–164. Paris: École Normale Supérieure. (shrink)