Selections from the Principles of Philosophy

Before you ever questioned your reality, a French mathematician in a heated room decided to doubt everything. What he found there became the bedrock of modern thought. In these selections from Principles of Philosophy, Descartes builds an audacious framework: if every belief can be doubted, what single truth survives? His answer: 'I think, therefore I am' - a statement so simple it changed philosophy forever. He then systematically dismantles medieval thinking, arguing that only clear, distinct ideas can constitute knowledge, and draws the famous divide between thinking mind and material body that still fuels debate today. The text moves from foundational method - doubt everything until you reach certainty - to the existence of God, the nature of matter, and the mechanical workings of the physical world. It is compact, rigorous, and unapologetically ambitious. Four centuries later, if you've ever wondered how we got from medieval scholasticism to modern rationality, this is where it began.