descartes Flashcards
Descartes meditations
- he doubts everything because he has been deceived before
- he still doubts everything but determines that he is a thinking thing and that he exists
He knows his thoughts better than he can know material things
3.he makes the argument that god exists through the theory that only things that have greater essence are able to create things with smaller essence. God has the greatest essence of them all so that means he created everything humans. - he provided another argument for god and —?
The use of will
Must use intellect (clear and distinct ideas) to be certain - the reason for errors and doubting
6.he proves the existence of material objects and has the first principles of philosophy
Imagination vs understanding
Imagination cannot provide us w certainty
The senses
Proving mind and body are distinct
Argument from conceivability-
I exist as a thinking thing, my mind is distinct from my body
Argument from divisibility
Mind: essence- thought, immaterial, indivisible, not always affected by body
Body: essence- extension, material, divisible, always moved by bodies
Method of doubt
since descartes was deceived once before, he can doubt everything as a way of searching for certainty.
By doubting everything, he is ridding himself of any previous knowledge that could influence his current view on the world.
he is starting from the ground up and rebuilding all of his knowledge.
“I think; therefore, I am”
Descartes says that since we are a thinking thing, then we exist.
Even if we are a brain in a vat or there is an evil demon, we are still a thinking thing.
Not to think we are not a thinking thing is a contradiction in itself, because by thinking that you are not thinking you are thinking w
Rationalism
Reason is the source of knowledge
Intuition
Mind has innate concepts
Logic and reason are primary
Deduction (general to particular)
Mathematics are the paradigm of knowledge
Genuine knowledge is certain
Experience/experiment cannot produce certainty
Certainty
Having without a doubt certainty over a topic and idea. Cannot even have a “what if” or sliver of doubt to be certain.
First philosophy/fundamental principle/self-grounding
Basically having an idea revolves around itself. The idea of self for descartes is self grounding for example. laying the philosophical foundations
Sense perceptions
Sense perceptions can be deceitful and should not be a reliable way of discovering knowledge for rationalists
Clear and distinct ideas
Clear and disctinct ideas are ideas that are so self-evidently true that they cannot be doubted
The dream argument
The dream argument is proposed by Descartes, stating that we cannot be certain of anything because we can always be dreaming. There is always a chance that we are dreaming. There are dreams that seem so real we think its real life. Since this has happened even one time, there is always a chance that it can happen again.
The evil demon argument
Descartes proposes that a reason to doubt everything is that an evil demon could be controlling all of our actions and deceiving us.
Radical doubt
Descartes refused to accept anything as true unless it struck him as clearly and distinctly true, in itself.
Ex. a Good God exists
All experiences of:
Sensory experience
Physics
Astronomy
Medicine
Arithmetic
geometry
Mind/body dualism
The theory that the mind and the body do not work together to make decisions. This theory is followed by Descartes, where he claims that there is a distinction between mind and body.
Mind body
Indivisible (cannot separate my mind in - is divisible
Different parts) - bodies are extended things
Essence cannot be located in space (no
extension
The piece of wax
When we see a candle, we notice the wax, the stick that lights on fire. When the candle is lit and melts until there is nothing but a pool of wax, we still know that it is the same candle. Even though they dont look the same or have the same properties, we still know that they are the same piece of wax through reason.
Why Descartes needs an argument for God’s existence
Without the certaintly that God exists, Descartes believes that we will never have the ability to posses certain knowledge.
The ontological argument for God’s existence
P1: I have a clear and distinct idea of God as a supremely perfect being
P2: Existence is a perfection
C1: Therefore, Existence is part of God’s essence
C2: Therefore, God necessarily exists