I love his thoughts on philosophy and how he breaks everything down and builds it back up from the tiniest building block so that you know what are truths and what are not.
but i do not agree with his philosophy on how he knows god exists.
Finally, Descartes considers the idea of God that is in his mind. This idea is that of 'an infinite and independent substance,' that is infinitely perfect. Where does this idea come from? Such an idea requires an explanation beyond himself, because Descartes himself is a finite and thus imperfect being - the fact that he can doubt is proof enough of that. (It is impossible to imagine God having doubts.) Moreover, that explanation must have as much formal reality as the initial idea of infinite perfection. This, then, is his proof for God's existence:
1.We have an idea of that which has infinite perfection.
2.The idea we have of ourselves entails finitude and imperfection.
3.According to the principle of sufficient reason, there must be as much reality (formally or eminently) in the cause of any idea as (objectively) in the idea itself.
4.Therefore, the idea we have of infinite perfection originated from a being with infinite formal perfection.
5.It follows that the idea could not have originated in ourselves or our ideas of ourselves.
6.The origin of the idea could only be the real existence of the infinite being that we call God.
i do not agree simply due tot he fact that descartes was trying to forget the fact that he knew about god and grew up in an era where god was everything to almost everyone. god could not simply be an idea he had an innate knowledge of (even after trying to forget everything he was taught in his childhood) because the idea HAD to have been drilled into his head from a very young age. and taking into account the human brain and how it retains knowledge the things he learned as a child could never vanish from his head. no matter how much of a genius you are, no matter how dedicated a scientist and philosopher you are you simply cant unlearn that which affected so much during your young life (age 1-5 or so). and even say you could the idea of infinite perfection is not a strange idea that suddenly pops into our head. it is my belief that the idea of perfection is such a profounding idea is because we realize our own mortality. and when we realize that one day we will die and nothing more will come of us we think of perfection. to reach our utmost wanted potential in order to feel as if though our life was not a waste. it may not be for absolutely everyone (as im sure with parts of descartes philosophy doesnt match with everyone), but for when a person realizes their genius or potential they feel as if though this is what is expected of themselves.
it is my belief that any creature that has the ability to realize themselves and their own mortality will strive for their feeling of perfection. it may not be big or small but it is then up to the individual to decide on what is perfection. for every creature will have a different perspective on it.
it seems to me that humans who devote themselves to a god devote themselves to the persuit of perfection.
god created man in his image; man created god in his aspiration. perfection is a lie. you can never reach it, only to hope to make the best of it. and why would god put the idea of such a thing in our heads when all some/most of us do is torment ourselves into trying to reach it? To devoting ourselves into becoming better and better at all costs? In that way god is not perfect. Since he did not create the perfect being that did not strive for perfection.