Descartes' Metaphysics: Thinking, God, and the World
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The Three Substances in Descartes' Metaphysics
The Thinking Substance (Cogito)
In Descartes' philosophy, the starting point is the undeniable existence of the thinking self. He argues that even if one doubts everything, the very act of doubting proves that there is a thinking entity. This is the famous "Cogito, ergo sum" - "I think, therefore I am." The cogito, or the thinking self, is characterized by thoughts, ideas, and subjective representations. However, Descartes acknowledges that these internal experiences might not accurately reflect the external world. He grapples with the challenge of determining whether his ideas are mere imaginings or objective truths.
Descartes classifies ideas into three categories:
- Adventitious Ideas: These are images