This part of optics, when well understood, shows us how we may make things a very long distance off appear as if placed very close, and large near things appear very small, and how we may make small things placed at a distance appear any size we want, so that it may be possible for us to read the smallest letters at incredible distances, or to count sand, or seed, or any sort or minute objects.

Command that in no way there be in your household any who make strife, discord or divisions in the hostel, but all shall be of one accord, of one will as of one heart and one soul.

And strictly forbid that any quarrelling be at your meals.

It is not possible for form to do without matter because it is not separable, nor can matter itself be purged of form.

Also see how many quarters of corn you will spend in a week in dispensable bread, how much in alms.

This part of optics, when well understood, shows us how we may make things a very long distance off appear as if placed very close, and large near things appear very small, and how we may make small things placed at a distance appear any size we want, so that it may be possible for us to read the smallest letters at incredible distances, or to count sand, or seed, or any sort or minute objects.

And with the money from your corn, from your rents, and from the issues of pleas in your courts, and from your stock, arrange the expenses of your kitchen and your wines and your wardrobe and the wages of servants, and subtract your stock.