Descartes's Argument For The Existence Of God
The fact that Descartes is even considering the mere question of his own existence just proves that he indeed exists and that is certain. Further, he argues that we are essentially thinking things (res cogitans) that can know our minds clearly and distinctly. Descartes pitches a tent for himself firmly in the rationalist camp, as opposed to the empiricist camp. He constantly emphasizes that the clear and distinct perceptions of the intellect are the only sure means of securing knowledge, and ultimately concludes that the senses are not designed to give us knowledge at all, but are rather meant to help us move through the world in a very practical
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According to this principle, the reality of the cause must be greater than or equal to the reality of the effect. The idea of God has infinite reality and, by theory, the only cause of this infinite idea can only be God. With all this said, the reality of God is the only plausible cause to the reality of the idea of God. Descartes gives another proof in Meditation Five where he has reasoned that a triangle must have all the properties he assigns to it, because the triangle exists as an idea in his mind and he clearly and distinctly perceives all these properties. He then reasons, by analogy, that God exists as an idea in his mind and he clearly and distinctly perceives all of his qualities. One of these qualities is existence, so it follows from his clear and distinct perception that God must exist. If existence is the essence of God, then God would not be God if he did not exist, just as a triangle would not be a triangle if it were not three-sided. At the very least, then, the existence of God must be as certain as the properties of mathematical and geometrical objects since he can prove them in the same way. Having concluded that God must necessarily exist, Descartes goes further and then asks how he received the idea of God. He could have not invented the idea. Therefore, the idea must be innate which, according to Descartes, means that God must have created him
According to this principle, the reality of the cause must be greater than or equal to the reality of the effect. The idea of God has infinite reality and, by theory, the only cause of this infinite idea can only be God. With all this said, the reality of God is the only plausible cause to the reality of the idea of God. Descartes gives another proof in Meditation Five where he has reasoned that a triangle must have all the properties he assigns to it, because the triangle exists as an idea in his mind and he clearly and distinctly perceives all these properties. He then reasons, by analogy, that God exists as an idea in his mind and he clearly and distinctly perceives all of his qualities. One of these qualities is existence, so it follows from his clear and distinct perception that God must exist. If existence is the essence of God, then God would not be God if he did not exist, just as a triangle would not be a triangle if it were not three-sided. At the very least, then, the existence of God must be as certain as the properties of mathematical and geometrical objects since he can prove them in the same way. Having concluded that God must necessarily exist, Descartes goes further and then asks how he received the idea of God. He could have not invented the idea. Therefore, the idea must be innate which, according to Descartes, means that God must have created him