Miskawayh deals with thirteen issues in natural and divinity (God, the soul and its conditions, prophecies), and shows the importance of natural philosophy, divine and gradual obtaining them, and that the beginning is in mathematics (reasoning of the mind) and then with logic (the machine of philosophy), then the natural women and then the divinity and then what is related to the soul and what they are Until the maximum ends reach, it is not worth the name of philosophy who is limited to one side.