"Descartes was the first to bring to light the idea of a transcendental science, which is to contain a system of knowledge of the conditions of possibility of all knowledge." - Kant A new translation directly from the original manuscripts into English of Descartes' famous work "Rules for the Direction of the Mind". The edition contains a timeline of Descartes' life and works, a glossary of Cartesian terminology, and Afterword by the translator that explains the significance of Descartes' contributions to modern philosophy and science, particularly his method of skepticism and rationalism. Descartes' focus on clear, logical reasoning is a hallmark of his philosophy, and his influence on fields such as mathematics and physics is profound, with his work laying the foundation for later scientific advances. Here, Descartes lays out a method for approaching problems and seeking knowledge. The importance of this work lies in the fact that it established the scientific method as a way of investigating the world, and had a significant influence on the development of modern science. This work is one of the foundational texts of Western Philosophy according to Nietzsche and Schopenhauer. Written around 1628 but unpublished during his lifetime, Descartes' Rules for the Direction of the Mind (sometimes translated Cartesian Discipline) is an important early work that outlines his approach to knowledge and scientific inquiry. In this treatise, Descartes presents 21 rules designed to guide the mind toward truth through a structured method of reasoning. Although incomplete, it laid the groundwork for his later development of the Cartesian method, which emphasized clarity, logical deduction, and the importance of starting with self-evident truths. The work was heavily influenced by mathematics, which Descartes admired for its certainty and precision. His central goal was to find a method that could apply the same level of rigor to all areas of human knowledge, not just mathematics. The Rules also highlight Descartes' break with scholasticism and his desire to reject traditional methods of inquiry based on authority and ancient texts. He advocates the direct use of reason and intuition, urging the thinker to discard unnecessary complexity and focus on simple, clear ideas that can be built upon. This work is significant because it marks the early development of Descartes' methodological skepticism, which he would later refine into his famous "cogito, ergo sum" (I think, therefore I am) in his Meditations. The Rules represent a transitional phase in Descartes' thought, bridging the gap between Renaissance humanism and the systematic, analytical philosophy he would pioneer in the modern era.