We subdue four-footed beasts for our carriage, whose speed and strength supply our slowness and inability.

On some we put burdens, on others yokes.

We convert the sagacity of the elephant and the quick scent of the dog to our own advantage.

Out of the caverns of the earth we dig iron, a thing entirely necessary for the cultivation of the ground.

We discover the hidden veins of copper, silver, and gold, advantageous for our use and beautiful as ornaments.