Every action done by nature is done in the shortest way.

The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known.

Avoid studies of which the result dies with the worker.

The knowledge of all things is possible

Be a mirror, absorb everything around you and still remain the same

The length of a man's outspread arms is equal to his height.

The Bactrian have two humps; the Arabian one only. They are swift in battle and most useful to carry burdens. This animal is extremely observant of rule and measure, for it will not move if it has a greater weight than it is used to, and if it is taken too far it does the same, and suddenly stops and so the merchants are obliged to lodge there.