Everything is only for a day, both that which remembers and that which is remembered. Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the Universe loves nothing so much as to change the things which are and to make new things like them. For everything that exists is in a manner the seed of that which will be.
Marcus AureliusIf you are pained by any external thing, it is not this thing that disturbs you, but your own judgment about it. It is in your power to erase this judgment about it. If anything in your own nature gives you pain, you are who hinders you from correcting your opinion.
Marcus AureliusConsider, for example, and you will find that almost all the transactions in the time of Vespasian differed little from those of the present day. You there find marrying and giving in marriage, educating children, sickness, death, war, joyous holidays, traffic, agriculture, flatterers, insolent pride, suspicions, laying of plots, longing for the death of others, newsmongers, lovers, misers, men canvassing far the consulship and for the kingdom; yet all these passed away, and are nowhere.
Marcus Aurelius