If a person studies too much and exhausts his reflective powers, he will be confused, and will not be able to apprehend even that which had been within the power of his apprehension. For the powers of the body are all alike in this respect.
In so far as the soul is a force residing in the body; it has therefore been said that the properties of the soul depend of the condition of the body.
All forces that reside in the body are angels.
Man's shortcomings and sins are all due to the substance of the body and not to its form; while all his merits are exclusively due to his form.
The first kind of evil is that which is caused to man by the circumstance that he is subject to genesis and destruction, or that he possesses a body.
The soul is subject to health and disease, just as is the body. The health and disease of both . . . undoubtedly depend upon beliefs and customs, which are peculiar to mankind.
Transient bodies are only subject to destruction through their substance and not through their form, nor can the essence of their form be destroyed; in this respect they are permanent.