Problems With Descartes

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Problems with Descartes' Philosophy

It is from the views of Descartes that most of the metaphysical systems of the last three centuries begin, trying to improve upon them, or to overcome what they regard as difficulties in the Cartesian system.

René Descartes is responsible for the predominance of the problem of human knowledge in modern philosophy. Many of the systems of philosophy and theories of knowledge which have arisen in the last three centuries can trace their lineage directly to the influence of the questions Descartes raised and the method he employed in answering them. He promulgated the principle of "science without presuppositions" and thereby introduced a new epoch in science and philosophy. It will, therefore, not …show more content…

The fact is, he did thus doubt everything in principle. He was, of course, not a skeptic, since his purpose was to arrive at the ultimate base of certainty and truth and to rebuild on this indubitable foundation the edifice of knowledge. He compared himself to Archimedes. "Archimedes, that he might transport the entire globe from the place it occupied to another, demanded only a point that was firm and immovable; so also, I shall be entitled to entertain the highest expectations, if I am fortunate enough to discover only one thing that is certain and indubitable." (6) Descartes was fortunate enough to discover his firm and immovable fulcrum: his own existence -- "I think, therefore I am." He had now his fulcrum; what would be his lever?
It would have to be the trustworthiness of his reasoning powers. But how could he establish this, seeing that this also was involved in universal doubt and destroyed with all other spontaneous convictions? Descartes hit upon an ingenious idea. He would demonstrate the existence of an infinitely perfect Being, who must have given man faculties which are trustworthy and capable of discovering truth. The only thing absolutely certain so far for Descartes was his own existence; and from this fact alone he would be obliged to deduce God's …show more content…

Since his very reason and the process of reasoning is as yet of doubtful validity, how can be validly demonstrate God's existence and veracity? The trustworthiness of Descartes' reasoning powers is supposed to flow as a necessary consequence from the infinite perfection of God; and God's infinite perfect is made certain to him by means of a proof developed by these very reasoning powers, before he has proved that these reasoning powers are valid and trustworthy: he thereby gratuitously assumes the very thing beforehand which he intends to prove afterwards. (A logical fallacy called Begging the Question, or a circular

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