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Rene Descartes

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Ysabelle Mariscal

on 31 March 2015

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Transcript of Rene Descartes

Rene Descartes
Dianne, karen, levie, ysabelle
"Cogito Ergo Sum"
Descartes' Main Theory
Descartes believed that true knowledge can only be obtained through the methodical application of reason.
Rene Descartes is a French philosopher who was born on March 31, 1596, La Haye, a small village near Tours, France.
He's the father of modern philosophy and a public figure for the movement "rationalism"
As a student, Descartes had always been sickly, so his teachers allowed him to stay in bed until noon everyday.
Contributions to Knowledge
Unreliability of Sense Perception
• Offered a philosophical framework for the natural sciences
Dream argument
deceiving god and evil demon argument
Algebra&Geometry: roots, exponents, cartesians
• His most significant philosophical position was connected with the mind-body dichotomy
Using one concise phrase, “cogito ergo sum” (I think, therefore I am), he changed the whole direction of Western philosophy
Descartes had a lot of contributions to mathematics and physics.
Optics: reflection and refraction of light
Knowledge Issues
What are the implications of not trusting our senses?
What are the ethical issues that stem from his theory of deception?
REAL-life Situation
Knowledge Question
To what extent can we use reason as a way to obtain knowledge and information???
I think
When you’re choosing between 2 things (eg a computer), you don’t choose them based on their appearance, we reason with ourselves and compare.
When we have class discussions (especially in TOK), we make judgements that makes the most sense through reasoning.

People who follow Descartes are called "Cartesians"
Strengths & Weaknesses
- Descartes is very biased with subjects that require pure reason so this hinders his judgement towards sense perception.
this explains why he loves Math & Science! :P
- He does not trust sense perception, so what is his basis for reasoning?
we are simply just floating brains and that our bodies are just illusions defies science
- Reasoning allows us to make a rational judgement or decision, so Descartes’ theory is strong on this point.
Full transcript