Descartes' Philosophy: Methodical Doubt and the Three Substances
René Descartes' Core Philosophy
Descartes' philosophical system addresses several fundamental areas:
- Methodical Doubt
- The Cartesian Method
- The Interim Morality
- Metaphysics: The Three Substances (Thinking, Infinite, Extended)
- The Relationship of Substances
- Freedom and the Passions
Methodical Doubt
Through methodical doubt, Descartes seeks to find the simplest elements of knowledge—truths that can resist all skepticism. Once these foundational truths are established, he believed one could safely deduce the rest of human knowledge using the appropriate method.
To find these truths, Descartes questioned all accepted knowledge, employing three main arguments:
- The deception of the senses.
- The inability to distinguish waking from sleep (the Dream Argument)