Rene Descartes (1596 ~ 1650)
- Had a vision of great potential for progress if mathematical method were to be applied to all fields of knowledge
- Deductive Reasoning: Specific information can be logically deduced from general information: Only reason can give us certainty
- Descartes concluded that he had a clear idea of a perfect entity in his mind. The idea of perfection cannot come from himself, which is imperfect. It must have originated from the perfect entity itself (God).
- The idea of God is innate, not from experience.
- With the certainty of God’s existence, whatever we perceive with our reason corresponds with reality.
- Perfect and good God would not deceive us.
- Dualism (2 Substances)
- Mind (Thought): purely conscious
- Body (Matter): extension