Meditations part 5

I've read this part over several times and still don't exactly know what Descartes is trying to say. He first tries to free himself from doubts in which he previously fell into before. He says he notices things for the first time that were inface in him for a while. He also says, " what i believe must be considered above all". Sounds like he didn't trust any one but himself, and doesn't want to hear about any one else's theories. Descartes believes that if a triangle doesn't exist any where in the world, that it still has a deterninate nature. Even though he may of imagined it, it's still something. That is what i think he's saying. He even goes as far as saying that all he knows is clearly true. For a man of his time, or any time for that matter, it's a very bold statement. It's not evenn clear what he even knows to be true or not.