Descartes and the Metaphysical Doubt

Humans are finite substances so they cannot come up with the ideas of infinite substances unless it were given to them by an infinite substance. Descartes continues that while we advance gradually each day these attributes could never exist within us because we are only potentially perfect whereas God is actually perfect. Furthermore, Descartes argues that only God could be the author of his being because if it were he or his parent’s other finite substances that authored his being then he would not have wants or doubts because he would have bestowed upon himself every perfection imaginable to a finite being. Therefore, God exists because Descartes could not have thought of God because he is a finite substance thus the idea of God must have come from an infinite substance.

I have an idea of a perfect being; it must contain in reality all the

From Descartes point of view, he thinks that it makes sense to talk of degrees of reality to qualify the above assumptions, and he sometimes equates this with talk of degrees of perfection. Thus, he brings God back into the picture. The ideas, then, could come from only God, or from another being superior to humans but inferior to God. But this, too, is impossible, argues Descartes, as if it were the case that God produces the ideas of bodies in humans, then the very strong inclination we have towards believing that the idea-producing bodies resemble the ideas we have would be false and thus God would be allowing us to be deceived which is not permissible. The same would apply if any other being were producing

Secondly, to come up with the second proof of Gods existence, Descartes thought that the power and action that is needed to preserve something is capable of creating something new. He argued that there must be as much power in the cause just as it is in the effect. According to the philosophical writings of Descartes, upon knowing that he did not have power to preserve his own existence because he was just a thinking thing; Descartes concluded that the power must have come from outside him (Descartes, Cottingham and Murdoch 26) And since he is a thinking thing, he claims that the one who created him must also be a thinking thing, possessing all the ideas and attributes of god. In addition, he observed that his parents could not be responsible for creating and preserving his life. Descartes therefore concludes that the one who created him and gave him ideas of a perfect God must be God, therefore God exists.

The highest degree of reality involves the infinite. The infinite represents substances that are unbounded and possess no conceivable or tangible limits in any of their aspects or qualities. The only example of this for Descartes would be an entity of omnipotence, who would be all knowing, all powerful, and that of which no greater can be conceived, in other words God.

Descartes then goes on to assume that there is a God, who is all powerful, and created this world; yet he asks, "How do I know that He has not brought it to pass that there is no earth, no heaven, no extended body, no magnitude, no place, and that nevertheless they seem to me to exist just exactly as I know see them?" (Descartes, p.76, par.5) Without a guarantee of reality, maybe all of his previous beliefs are false. Descartes doubts the supreme goodness of a God that would let him be deceived even occasionally. Moreover, if a perfect God does not exist then it becomes probable that Descartes himself is increasingly imperfect and therefore is constantly being misled. "If, however, it is contrary to His goodness to have made me such that I constantly deceive myself, it would also appear contrary to His goodness to permit me to be sometimes deceived, and nevertheless I cannot doubt that he does permit this." (Descartes, p.76, par.5) Descartes assumes the scenario that God is really an "evil demon".

As the first “premise” of his proof Descartes makes a very important distinction between the various types of ideas. The first type of idea he discusses is ideas that are images of things. This type of idea, when thought of, is apprehended as an object of my thought, but there is something more embraced in the thought than merely the representation of the object. Now if these ideas are considered only in themselves, and are not referred to any object beyond them, they cannot, properly speaking, be false. This even applies to the will and affections, a second type of idea, for although I may desire objects that are wrong, it is still true that I desire them. The third type of idea is that of judgement. Descartes goal in this classification is to find in his mind which of the ideas are the proper bearers of truth and falsehood. Considered in themselves, ideas are not false nor are desires. The only place where mistakes can be made is in making judgements. As Descartes says, “And the chief and most common mistake which is to be found here consists in my judging that the ideas which are in me resemble, or conform to, things located outside me.” Descartes further classifies his ideas by their origin: those that appear

After giving his first proof for the existence of God Descartes concludes by mentioning that this proof is not always self-evident. When he is absorbed in the world of sensory illusions it is not quite obvious to him that God’s existence can be derived from the idea of God. So to further cement God’s existence Descartes begins his second proof by posing the question of whether he could exist (a thinking thing that possesses the idea of an infinite and perfect god) if God itself did not exist.

Descartes’s attempt to prove the existence of God begins with the argument that he has the clear and distinct idea of God as the “most perfect being and that there must be at least as much reality in the efficient and total cause in the effect of that cause” (40). Therefore, this idea of God can’t be from himself, but its cause must be God. So God exists. In what follows I’ll explain these terms and why the premises seemed true to him.

To further validate his proof, he attempts to show God’s existence as an a posteriori claim. Descartes states that as humans we have the idea of God in our minds. We conceive God as a perfect being, that of perfect existence. As shown in the quote from page 37, this idea of God is beyond our reasoning to create, and must have come from God itself. Our idea of God certifies his existence. Descartes deviates from the method again, and his reasoning fails to provide an absolute proof.

Descartes utilizes another rule in his thought process which states that objective reality cannot exist without formal reality. By this he means that we cannot form an idea without a cause. Assuming that God does exist would be an example of a Formal reality. Whereas the idea of God, is considered objective reality because it represents an infinite substance. Ideas themselves automatically have objective reality because the idea itself represents some reality. Also, the more perfect ideas cannot come from the less perfect; this is called The Causal

In the meditations, Descartes evaluates whether or not everything we know is a reality or a dream. Descartes claims that we can only be sure that our beliefs are true when we clearly and distinctively perceive them to be true. As the reader analyzes the third meditation, Descartes has confirmed that some of his beliefs are in fact true. The first is that Descartes himself exists. This is expressed in what has now become a popular quote known as the “Cogito” which says, “I think therefore I am. His second conclusion is that God exist and that he is not a deceiver. Descartes then presents his arguments to prove the existence of God. He argues that by nature humans are imperfect beings. Furthermore, humankind could not possibly be able to comprehend perfection or infinite things on their own. He writes, “By the name of God I understand a substance that is infinite, independent, all-knowing, all powerful, and which myself and everything else…have been created.”(16) Descartes uses this description of God to display the distinction between God and man.

Descartes defines senses as a part of the process of thinking. He also explains that we can use our senses to help us understand the true nature of things. Descartes struggled with doubt and his senses when he used his ontological proof that God existed. For example, he explains that he is aware that he is not perfect and he makes mistakes. He understands that he must know what perfect is in order to give someone the title. He knew that something perfect lead him to have these ideas and that it must exist. His definition of perfect is unique without the knowledge of anyone else and he defined it as God. For example, Descartes believes that God is perfect and deception is a sign of imperfection. Therefore, Descartes came to the conclusion that God cannot deceive. This example shows that Descartes did struggle to accept his own belief without doubting himself. His ontological argument proved, to Descartes, that through God everything

Descartes attacks the possibility of certainty with regards to the existence of small and universal elements with the possibility of our thoughts being altered by an omnipotent deceiver. In paragraph nine, he states, “How do I know that he did not bring it about that there be no Earth at all, no heavens, no extended thing, no figure, no size, no place, and yet all these things should seem to me to exist precisely as they appear to do now.” His point is that this omnipotent evil deceiver could create in our minds an understanding of mathematics and logic that is at odds with reality, causing us to construe everything wrongly. Thus Descartes ends this final and devastating doubt with the preliminary conclusion that everything he perceives can be called into doubt.

Given the above arguments one can begin to understand the nature of the God Descartes is endeavoring to prove. For Descartes, God is infinite and perfect existence. God is “eternal, immutable, independent, supremely intelligent, supremely powerful, and [the creator of] everything else". (Descartes 20) Not only does God possess this nature but it is necessary that He does so. If God is not infinite or perfect God could not exist as these attributes are essential to God's existence. Furthermore, if God is not the ultimate creator the innate idea of God we experience would cease to be innate but adventitious (externally caused) or imaginative (caused by the mind) which is again impossible given its content. Given these qualities one can draw a connection to the