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 rightly, 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. 24. Alexander the Macedonian and his groom by death were brought to the same state; for either they were received among the same seminal principles of the universe, or they were alike dispersed among the atoms. 25. Consider how many things in the same indivisible time take place in each of us,—things which concern the body and things which concern the soul: and so thou wilt not wonder if many more things, or rather all things which come into existence in that which is the one and all, which we call Cosmos, exist in it at the same time. 26. If any man should propose to thee the question, how the name Antoninus is written, wouldst thou with a straining of the voice utter each letter? What then if they grow angry, wilt thou be angry too? Wilt thou not go on with composure and number every letter? Just so then in this life also remember that every duty is made up of certain parts. These it is thy duty to observe, and without being disturbed or showing anger towards those who are angry with thee to go on thy way and finish that which is set before thee. 27. How cruel it is not to allow men to strive after the things which appear to them to be suitable to their nature and profitable! And yet in a manner thou dost not allow them to do this, when thou art vexed because they do wrong. For they are certainly moved towards things because they suppose them to be suitable to their nature and profitable to them.—But it is not so.—Teach them then, and show them without being angry.