>>24531210
That isn't Descartes argument though. It rather goes like this:

1.
>everything has a cause (principle of sufficient reason)
>I have an idea of god
>this idea thus must have a cause
>since my idea of god is perfect but I am not perfect myself, the cause cannot be within me
>therefore, god must exist exterior to me

2.
>everything has a cause
>the cause of a thing must be at least as real as the thing itself
>at least one thing can be proven to exist, namely myself
>thus it must have a cause which also exists
>tracing back the causes of all existing things will lead to the first cause which has to be the realest
>this is god

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Reading up up deductive reasoning and inductive reasoning will save your damn life. If used correctly it may even clear up delusions.