and the horse-breaker, and he who trains the dog, seek this end.  But the education and the teaching of youth aim at something.  In this then is the value of the education and the teaching.  And if this is well, thou wilt not seek anything else.  Wilt thou not cease to value many other things too?  Then thou wilt be neither free, nor sufficient for thy own happiness, nor without passion.  For of necessity thou must be envious, jealous, and suspicious of those who can take away those things, and plot against those who have that which is valued by thee.  Of necessity a man must be altogether in a state of perturbation who wants any of these things; and besides, he must often find fault with the gods.  But to reverence and honor thy own mind will make thee content with thyself, and in harmony with society, and in agreement with the gods, that is, praising all that they give and have ordered.

17.  Above, below, all around are the movements of the elements.  But the motion of virtue is in none of these:  it is something more divine, and advancing by a way hardly observed, it goes happily on its road.

18.  How strangely men act!  They will not praise those who are living at the same time and living with themselves; but to be themselves praised by posterity, by those whom they have never seen nor ever will see, this they set much value on.  But this is very much the same as if thou shouldst be grieved because those who have lived before thee did not praise thee.

19.  If a thing is difficult to be accomplished by thyself, do not think that it is impossible for man:  but if anything is possible for man and conformable to his nature, think that this can be attained by thyself too.

20.  In the gymnastic exercises suppose that a man has torn thee with his nails, and by dashing against thy head has inflicted a wound.  Well, we neither show any signs of vexation, nor are we offended, nor do we suspect him afterwards as a treacherous fellow; and yet we are on our guard against him, not however as an enemy, nor yet with suspicion, but we quietly get out of his way.  Something like this let thy behavior be in all the other parts of life; let us overlook many things in those who are like antagonists in the gymnasium.  For it is in our power, as I said, to get out of the way, and to have no suspicion nor hatred.

21.  If any man is able to convince me and show me that I do not think or act right, I will gladly change; for I seek the truth, by which no man was ever injured.  But he is injured who abides in his error and ignorance.

22.  I do my duty:  other things trouble me not; for they are either things without life, or things without reason, or things that have rambled and know not the way.

23.  As to the animals which have no reason, and generally all things and objects, do thou, since thou hast reason and they have none, make use of them with a generous and liberal spirit.  But towards human beings, as they have reason, behave in a social spirit.  And on all occasions call on the gods, and do not perplex thyself about the length of time in which thou shalt do this; for even three hours so spent are sufficient.