Note | Philosophy of René Descartes | Jean-Michel Serres, Composer-pianist (Apfel Café Music): Website

Originator of the Modern Philosophy

René Descartes was the originator of the modern philosophy. Also he was a polymath made great contributions in mathematics and physics. He opened up the new frontier and the starting point of modern philosophy and modern science, and made the basic method, rule and questions of modern philosophy. But he left many problems behind.

Methodological Skepticism

From his youth, Descartes questioned and searched the truth and the certainty of philosophy and science. But he felt, on mathematics, especially arithmetic and geometry, there’s a special certainty of human knowledge. So he pursued the certainty like mathematics on philosophy and all sciences.

Descartes’ point of arrival is the methodological skepticism and the principles of “Cogito ergo sum”. The methodological skepticism is an intentional doubt on all knowledge and things to acquire the truth and certainty. To produce the positive and reliable philosophy and science, Descartes strongly doubted temporarily and eliminated all doubtful and uncertain things beforehand. On positive philosophical system, there should not be an uncertain thing.

1 – Descartes regard external things and internal senses as uncertain. 2 – He regard the reality as uncertain. Because during we see a dream, I can’t comprehend it is dream or reality. When I wake up, I comprehend it is a dream. 3 – The mathematical truth may be uncertain, because the omnipotent and omniscient God has the power to deceive me. 4 – Then all things are doubtful and there is no certain thing. But my thinking is here, is not nothing. Doubt for my own thinking repeats, and my thinking can’t be removed on this consideration, like “Are all things dream ?”, “I am deceived by the God ?” So my thinking is certain, and I must exist by thinking. Then Descartes states “I think therefore I am.” (Cogito ergo sum. « Je pense, donc je suis. ») is undoubtedly and certain.

The import characteristics of Descartes’ skepticism is which is a starting point of philosophical study, not an end like Pyrrho’s skepticism. Pyrrho’s is epoché (suspension of judgment) to obtain a calmness of mind. Descartes’ skepticism is an intentional method to find a certain thing for philosophy and science.

Existence of God

From cogito, at first, Descartes certified the existence of God. For the present, the God is an idea of us, and the possible content of the God is the infinite substance. The “infinity” isn’t generated by human as a finite being. The infinity must be generated by infinite being, so the God is exist.

The God is the perfect being, so he must exist. The existential concept of the God is more perfect than possible beings or nothing. Also the God is the perfect good, so the God don’t deceive us. So there’s the God’s integrity, and exist of beings of the world is certified.

Subject / Object Dichotomy

Then contrary to the way of the methological skepticism, Descartes concerned things and beings of the external world. I exist precede (a priori) to external world. The world exists owing to my conscience and is a result of my thinking.

On Descartes’ thought, human conscience is a subject, and the external world is an object. So all of things in the world are object for men to percept and to think. And the reason of exist of things is me.

This Descartes’ subject-object dichotomy and the thought of “all things are perceptional objects” became a basis of the positive science by survey, observation and experiment. Also it drove scientific researches and became a basic thought of the modern society which control the nature by technology.

Dualism of Mind and Body

By Descartes’ thought, subject is a pure being of thinking (mental substance, res cogitans). Descartes explained by the wax argument, essence of physical things is extension which occupies certain space (extended and unthinking substance, res extensa). This view is called foundationalism.

Also by Descartes skepticism, my body is dubious thing. Human body is also an extension and an object. So Descartes regard body as a delicate machine, and it resulted the theory of Man a Machine (L’homme-machine).

The Problem of Descartes

Conclusion

References

René Descartes, Discours de la méthode (Édition j’ai lu, 2013)

Paul Strathern, Descartes in 90 Minutes (Ivan R. Dee, 1996)

Tom Sorell, Descartes: A Very Short Instroduction (Oxford University Press, 2001)

Jean-François Revel, Histoire de la philosophie occidentale (Nil Éditions, 1994)

Luc Ferry & Claude Capelier, La plus belle histoire de la philosophie (Éditions Points, 2014)

Roger-Pol Droit, Une brève histoire de la philosophie (Flammarion, 2008)

Bertrand Russell, The History of Western Philosophy (Simon & Schuster, 1972)

Nigel Warburton, A Little History of Philosophy (Yale University Press, 2011)

Roger Scruton, A Short History of Modern Philosophy (Routledge, 2002)

Gen Kida, History of Anti-Philosophy (Kodansha Academic Library, 2000)

Seiji Takeda, An Adventure on The Contemporary Thought (Chikuma Arts-and-Science Library, 1992)

Seiji Takeda, An Introduction to Philosophy: To Know Thyself (Chikuma Arts-and-Science Library, 1993)

Shigeto Nuki, Illustrated & Standard History of Philosophy (Shinshokan, 2008)

Shigeto Nuki, Philosophy Map (Chikuma New Books, 2004)

Sumihiko Kumano, The History of Western Philosophy: From The Modern Ages to The Present Day (Iwanami New Books, 2006)

Thierry Paquot & François Pépin, Dictionnaire Larousse de la Philosophie (Éditions Larousse, 2011)

Simon Blackburn, The Oxford Dictionary of Philosophy (Second Edition Revised), (Oxford University Press, 2008)

Robert Audi, The Cambridge Dictionary of Philosophy (Second Edition), (Cambridge University Press, 1995)

Thomas Mautner, The Penguin Dictionary of Philosophy (Second Edition), (Penguin Books, 2005)