"Selections from the Principles of Philosophy" encapsulates René Descartes' most profound meditations on existence, reason, and the universe. Through this editor-curated anthology, readers are invited into Descartes' revolutionary thought process, where he systematically dismantles old beliefs to build a new, rational understanding of reality. From the essence of matter to the nature of the soul, Descartes employs rigorous logic, culminating in the famous dictum "Cogito, ergo sum." A cornerstone in philosophy, this work illuminates the path to clear thinking and scientific inquiry.