The more necessary a thing is for living beings, the more easily it is found and the cheaper it is; the less necessary it is, the rarer and dearer it is.
For it is said, You shall strengthen the stranger and the dweller in your midst and live with him, that is to say, strengthen him until he needs no longer fall upon the mercy of the community or be in need.
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.
If men possessed wisdom, which stands in the same relation to the form of man as the sight to the eye, they would not cause any injury to themselves or to others, for the knowledge of the truth removes hatred and quarrels, and prevents mutual injuries.
