René Descartes (Leaving Cert Religious Education): Flashcards

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René Descartes
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René Descartes (dates & key contribution)

French philosopher (1596-1650), founder of modern philosophy

Context of Descartes' time

Scientific Revolution era: scepticism, no reliable method for knowledge

Descartes' systematic doubt method

Doubting anything possibly false to find absolute certainty

Rationalism in Descartes' philosophy

Mind, not senses, provides starting point for certain knowledge

Translation of 'Cogito ergo sum'

I think therefore I am

Why cogito is Descartes' bedrock of certainty

Even when doubting, one must exist as a thinking being to doubt

Descartes' proof of God's existence

Idea of perfect God in minds must come from God, so God exists

Cartesian Dualism definition

Division of reality into two substances: mind & matter

Res Cogitans meaning

Thinking substance: mind/soul/spirit, non-physical

Res Extensa meaning

Extended substance: physical matter governed by physical laws

'Ghost in the machine' in Descartes

Mind (ghost) operating within physical body (machine)

Descartes' mechanical universe view

Matter behaves by predictable laws of motion & inertia

Descartes' original intentions

Establish firm foundations for science free from theology

Deism definition (Descartes' path)

God created universe but remains outside, no longer intervening

Paradox of Descartes' legacy

His rational proof made it easier for God to disappear from view

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