III. However, we have said enough of these matters. (16) We must now examine with accuracy that which we have taken as the subject of our investigation, that we may not be led astray through being deceived by the indistinctness of words and expressions; but that, understanding accurately what it is of which we are speaking, we may frame our determinations felicitously. (17) Slavery, then, is of two kinds; slavery of the soul and slavery of the body. Now, of our bodies, men are masters; but over our souls, wickedness and the passions have the dominion. And we may speak of freedom in the same manner. For one kind of freedom gives fearlessness of body in respect of any dangers which can come upon it from men of still more powerful body; while the other produces peace to the mind, by putting a check upon the authority of the passions. (18) Now, about the former kind, scarcely any one ever raises any question; for the chances of fortune which happen to men are infinite in number, and it often happens that men of the highest virtue have fallen into unexpected misfortunes, and so have lost the freedom which belonged to them through their birth. But there is room for inquiry about those manners which neither desires, nor fears, nor pleasures, nor pains, have ever brought under the yoke, as if they had come forth out of confinement, and as if the chains by which they had been bound were now loosened. (19) Therefore, discarding all mention of those kinds of freedom which are only a pretence, and of all those names also which are quite unconnected with nature, but which owe their existence only to opinion, such as slaves born in the house, slaves purchased with money, slaves taken in war, let us now investigate the character of the man who is truly free, who is alone possessed of independence, even if ten thousand men set themselves down as his masters; for he will quote that line of Sophocles, which differs in no respect from the doctrines of the Pythagoreans–