Descartes argument for substance dualism Flashcards
which philosopher argued for substance dualism
descartes
what is the claims of substance dualism
- there are 2 types of substances
- the mind exists and are not identical to material bodies or to parts of material bodies.
what are the 2 types of substances
- physical
- non-physical
how does descartes describe a substance
a fundamental ontological category which could exist independently of other substances
how does descartes define a principle attribute
the defining feature of this substance that makes the substance the substance that it is
what is the substance of a non-physical substance
the mind
what is the substance of a physical substance
matter
what is another word for the mind
res cogitans
what is another word for mtatter
res extensa
what is the principle attribute for the mind
consciousness
what is the principle attribute for the matter
spatial extension: taking up space, the occupation of a specific location.
what is descartes conceivability argument for substance dualism
P1: I can (clearly and distinctly) conceive of my mind existing without my extended physical body (and, indeed, the whole physical world) existing. God could have created it in a way that exactly responds to my thoughts. so the fact that I can clearly and distinctly think of one thing apart from another assures me that the 2 things are distinct from one another, and that there are 2 since they can be separated by god, meaning my mind is a distinct thing from my body.
P2: Anything that I can clearly and distinctly conceive of is metaphysically possible
C1: Therefore, my mind existing without my extended physical body (and indeed the whole physical world) is metaphysically possible.
P3: If it is metaphysically possible for X to exist without Y then X is not identical to Y.
C2: Therefore, my mind is not identical with my extended physical body (nor is it identical with any part of the physical world).
how is something metaphysically possible
if we can conceive of it without contradiction
what is Descartes indivisibility argument
P1: My mind and my mental states cannot be conceived of as being divided
P2: Everything thought of as physical can be conceived of as being divided.
C: Therefore: minds and mental states are not physical.
what is the distinction between the mind and the body
- every body by its nature is divisible, but the mind cant be divided,
- when one considers the mind i.e. consider myself purely as a thinking thing, I cant detect any parts within myself; I understand myself to be something single and complete.
- The whole mind seems to be united to the whole body, but not by a uniting of parts to parts, because: If a foot or arm or any other part of the body is cut off, nothing is thereby taken away from the mind