knowledge of exterior objects, from the perception of the senses joined to the application of the mind; by which we see in what relation one thing stands to another, and by the aid of which we have invented those arts which are necessary for the support and pleasure of life. How charming is eloquence! How divine that mistress of the universe, as you call it! It teaches us what we were ignorant of, and makes us capable of teaching what we have learned. By this we exhort others; by this we persuade them; by this we comfort the afflicted; by this we deliver the affrighted from their fear; by this we moderate excessive joy; by this we assuage the passions of lust and anger; This it is which bound men by the chains of right and law, formed the bonds of civil society, and made us quit a wild and savage life.
And it will appear incredible, unless you carefully observe the facts, how complete the work of nature is in giving us the use of speech; for, first of all, there is an artery from the lungs to the bottom of the mouth, through which the voice, having its original principle in the mind, is transmitted. Then the tongue is placed in the mouth, bounded by the teeth. It softens and modulates the voice, which would otherwise be confusedly uttered; and, by pushing it to the teeth and other parts of the mouth, makes the sound distinct and articulate. We Stoics, therefore, compare the tongue to the bow of an instrument, the teeth to the strings, and the nostrils to the sounding-board.
LX. But how commodious are the hands which nature has given to man, and how beautifully do they minister to many arts! For, such is the flexibility of the joints, that our fingers are closed and opened without any difficulty. With their help, the hand is formed for painting, carving, and engraving; for playing on stringed instruments, and on the pipe. These are matters of pleasure. There are also works of necessity, such as tilling the ground, building houses, making cloth and habits, and working in brass and iron. It is the business of the mind to invent, the senses to perceive, and the hands to execute; so that if we have buildings, if we are clothed, if we live in safety, if we have cities, walls, habitations, and temples, it is to the hands we owe them.
