In Descartes meditation he is looking to gain total assurance about three problems. Is the body separate from the soul as it is a thinking thing. Whether God exist and if the outside world exist. In his desire to gain total assurance of these issues; Desecrates sets the base of ethics in which he gets his understanding from. This process he take to set the core fundamentals of this ethics is being doubtful. Doubtful in that he disregards every belief that he once thought to be truth or fictitious. Alternatively he would decide that if his belief can be doubted then it isn’t definite, thus proving it couldn’t be used as the core fundamentals. He abandons all his prior beliefs that were founded based on his senses. Desecrates then moves to argue,