Key Ideas from Part One of Descartes Discourse on the Method 1. Good sense is the most evenly distributed thing in the world; everyone believes they possess enough of it. 2. Descartes received a classical education but found that it left him with many doubts and errors. 3. He believed that the accumulation of knowledge from books and scholars did not necessarily lead to wisdom. 4. Traveling and experiencing different cultures taught him that moral values vary widely among people. 5. He realized that one must rely on their own reason and judgment rather than tradition or authority. 6. Descartes decided to withdraw from the world to reflect quietly and develop a method to guide reason. 7. He believed the search for truth required starting from scratch and doubting everything not absolutely certain. 8. The goal of his method was to build knowledge on clear and distinct ideas, like in mathematics. 9. He valued practice and self-experience over theoretical speculation. 10. His purpose in writing was not to teach others but to show how he guided his own reasoning.