Hmmm.. are you giving me your homework?

only question 3 is homework.

I can help you with fourth question. Give me time as I need to refresh my mind. As far as I can remmber he doubts and he knows that he cannot doubt since he cannot be sure about many things but he can be sure of one think that he exist since he thinks and therefore in order to think and be able to think something most exist that can think and that think he calls I! It is important to mention Descartes had a vast skill in language and one reason he was able to philosophies good was because of that! He could have said it in many different way but the way he have said it makes it clear and undoubtal! Once again it has being long time since i read the meditation series. Corret me if I am wrong at this stage I am not sure at all about my answers.! Cheers