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René Descartes is a foundational figure in the philosophy of consciousness, having famously linked it to existence through his 'cogito ergo sum' [1] and proposing substance dualism where consciousness is an immaterial substance {fact:7, fact:9}. His work established consciousness as a primary challenge to materialism [2] and continues to influence modern debates on the nature of the mind {fact:1, fact:12}.
Facts (14)
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Dualism (Stanford Encyclopedia of Philosophy/Winter 2016 Edition) plato.stanford.edu 4 facts
claimE. J. Lowe's theory of substance dualism differs from René Descartes's because Lowe does not define the person as a purely mental substance defined solely by thought or consciousness.
claimRené Descartes held the view that humans are conscious even when they do not appear to be.
claimDuring the classical and mediaeval periods, philosophers viewed the intellect as the aspect of the mind most resistant to materialistic accounts, whereas from the time of René Descartes onward, consciousness—specifically phenomenal consciousness or sensation—became the primary challenge to materialist monism.
claimRené Descartes' 'consciousness' account of substance dualism posits that consciousness itself is the immaterial substance.
Non-physicalist Theories of Consciousness cambridge.org 2 facts
claimRené Descartes claimed that humans possess indubitable knowledge of their own consciousness and, consequently, their own existence, summarized by the phrase "cogito ergo sum."
claimRené Descartes argued in 'Meditations' (VI) and 'Discourse on Method' (IV) that consciousness is distinct from the physical because it is conceivable for consciousness to exist without the body or the physical world.
Life, Intelligence, and Consciousness: A Functional Perspective longnow.org 1 fact
perspectiveRené Descartes argued that human and nonhuman animal bodies are mechanical, but humans possess souls that provide higher functions like intelligence and consciousness, whereas machines are soulless.
AI Sessions #9: The Case Against AI Consciousness (with Anil Seth) conspicuouscognition.com 1 fact
claimAnil Seth identifies human exceptionalism as a bias where humans prioritize language as a key indicator of intelligence and consciousness, a perspective he traces back to René Descartes' prioritization of rational thought as the essence of a conscious mind.
(PDF) On the function of consciousness - an adaptationist perspective academia.edu 1 fact
claimWestern philosophers have struggled to comprehend the nature of consciousness since the time of Descartes and Locke.
A Neuroscientific Theory of Consciousness - Sites at Dartmouth sites.dartmouth.edu 1 fact
claimThe 'existence' postulate of Integrated Information Theory asserts that consciousness is a thing that exists, following René Descartes' insight, 'I think, therefore I am.'
The Hard Problem of Consciousness | Springer Nature Link link.springer.com 1 fact
claimFor philosophers during the time of René Descartes, the primary philosophical problem was avoiding solipsism rather than proving the existence of consciousness.
Panpsychism - Stanford Encyclopedia of Philosophy plato.stanford.edu 1 fact
referenceThe Stanford Encyclopedia of Philosophy entry on Panpsychism lists related entries including George Berkeley, consciousness, René Descartes, dualism, emergent properties, epiphenomenalism, Charles Hartshorne, William James, Gottfried Wilhelm Leibniz, mereology, monism, neutral monism, pantheism, physicalism, qualia, quantum theory and consciousness, Josiah Royce, Baruch Spinoza, Alfred North Whitehead, and Wilhelm Maximilian Wundt.
Consciousness (Stanford Encyclopedia of Philosophy/Fall 2025 ... plato.stanford.edu 1 fact
claimSubstance dualism, such as traditional Cartesian dualism proposed by René Descartes in 1644, asserts the existence of both physical and non-physical substances, implying that consciousness inheres in non-physical minds or selves.
What a Contest of Consciousness Theories Really Proved quantamagazine.org 1 fact
claimThe division between "front-of-the-brain" and "back-of-the-brain" theories of consciousness reflects philosophical debates regarding whether consciousness is defined by thinking, as in René Descartes' "I think, therefore I am," or by a state of "not thinking."