A man should always have these two rules in readiness; the one, to do only whatever the reason of the ruling and legislating faculty may suggest for the use of men; the other, to change thy opinion, if there is any one at hand who sets thee right and moves thee from any opinion. But this change of opinion must proceed only from a certain persuasion, as of what is just or of common advantage, and the like, not because it appears pleasant or brings reputation.
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. But thou art thinking only of seeds which are cast into the earth or into a womb: but this is a very vulgar notion.
It is no evil for things to undergo change, and no good for things to subsist in consequence of change.
I am composed of the formal and the material; and neither of them will perish into non-existence, as neither of them came into existence out of non-existence. Every part of me then will be reduced by change into some part of the universe, and that again will change into another part of the universe, and so on for ever. And by consequence of such a change I too exist, and those who begot me, and so on for ever in the other direction. For nothing hinders us from saying so, even if the universe is administered according to definite periods of revolution.
Often think of the rapidity with which things pass by and disappear, both the things which are and the things which are produced. For substance is like a river in a continual flow, and the activities of things are in constant change, and the causes work in infinite varieties; and there is hardly anything which stands still. And consider this which is near to thee, this boundless abyss of the past and of the future in which all things disappear. How then is he not a fool who is puffed up with such things or plagued about them and makes himself miserable? for they vex him only for a time, and a short time.
All existing things soon change, and they will either be reduced to vapour, if indeed all substance is one, or they will be dispersed.
Some things are hurrying into existence, and others are hurrying out of it; and of that which is coming into existence part is already extinguished. Motions and changes are continually renewing the world, just as the uninterrupted course of time is always renewing the infinite duration of ages. In this flowing stream then, on which there is no abiding, what is there of the things which hurry by on which a man would set a high price? It would be just as if a man should fall in love with one of the sparrows which fly by, but it has already passed out of sight. Something of this kind is the very life of every man, like the exhalation of the blood and the respiration of the air. For such as it is to have once drawn in the air and to have given it back, which we do every moment, just the same is it with the whole respiratory power, which thou didst receive at thy birth yesterday and the day before, to give it back to the element from which thou didst first draw it.
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.
Is any man afraid of change? Why what can take place without change? What then is more pleasing or more suitable to the universal nature? And canst thou take a bath unless the wood undergoes a change? And canst thou be nourished, unless the food undergoes a change? And can anything else that is useful be accomplished without change? Dost thou not see then that for thyself also to change is just the same, and equally necessary for the universal nature?
Nature which governs the whole will soon change all things which thou seest, and out of their substance will make other things, and again other things from the substance of them, in order that the world may be ever new.
About death: Whether it is a dispersion, or a resolution into atoms, or annihilation, it is either extinction or change.
Look round at the courses of the stars, as if thou wert going along with them; and constantly consider the changes of the elements into one another; for such thoughts purge away the filth of the terrene life.
The nature of the universal has this work to do, to remove to that place the things which are in this, to change them, to take them away hence, and to carry them there. All things are change, yet we need not fear anything new. All things are familiar to us; but the distribution of them still remains the same.
That which has died falls not out of the universe. If it stays here, it also changes here, and is dissolved into its proper parts, which are elements of the universe and of thyself. And these too change, and they murmur not.
Take me and cast me where thou wilt; for there I shall keep my divine part tranquil, that is, content, if it can feel and act conformably to its proper constitution. Is this change of place sufficient reason why my soul should be unhappy and worse than it was, depressed, expanded, shrinking, affrighted? And what wilt thou find which is sufficient reason for this?
All things are changing: and thou thyself art in continuous mutation and in a manner in continuous destruction, and the whole universe too.
Termination of activity, cessation from movement and opinion, and in a sense their death, is no evil. Turn thy thoughts now to the consideration of thy life, thy life as a child, as a youth, thy manhood, thy old age, for in these also every change was a death. Is this anything to fear? Turn thy thoughts now to thy life under thy grandfather, then to thy life under thy mother, then to thy life under thy father; and as thou findest many other differences and changes and terminations, ask thyself, Is this anything to fear? In like manner, then, neither are the termination and cessation and change of thy whole life a thing to be afraid of.
Soon will the earth cover us all: then the earth, too, will change, and the things also which result from change will continue to change for ever, and these again for ever. For if a man reflects on the changes and transformations which follow one another like wave after wave and their rapidity, he will despise everything which is perishable.
Loss is nothing else than change. But the universal nature delights in change, and in obedience to her all things are now done well, and from eternity have been done in like form, and will be such to time without end. What, then, dost thou say? That all things have been and all things always will be bad, and that no power has ever been found in so many gods to rectify these things, but the world has been condemned to be found in never ceasing evil?
The parts of the whole, everything, I mean, which is naturally comprehended in the universe, must of necessity perish; but let this be understood in this sense, that they must undergo change. But if this is naturally both an evil and a necessity for the parts, the whole would not continue to exist in a good condition, the parts being subject to change and constituted so as to perish in various ways. For whether did nature herself design to do evil to the things which are parts of herself, and to make them subject to evil and of necessity fall into evil, or have such results happened without her knowing it? Both these suppositions, indeed, are incredible.
Acquire the contemplative way of seeing how all things change into one another, and constantly attend to it, and exercise thyself about this part of philosophy. For nothing is so much adapted to produce magnanimity. Such a man has put off the body, and as he sees that he must, no one knows how soon, go away from among men and leave everything here, he gives himself up entirely to just doing in all his actions, and in everything else that happens he resigns himself to the universal nature.
Look at everything that exists, and observe that it is already in dissolution and in change, and as it were putrefaction or dispersion, or that everything is so constituted by nature as to die.
Consider whence each thing is come, and of what it consists, and into what it changes, and what kind of a thing it will be when it has changed, and that it will sustain no harm.
Consider that before long thou wilt be nobody and nowhere, nor will any of the things exist which thou now seest, nor any of those who are now living. For all things are formed by nature to change and be turned and to perish in order that other things in continuous succession may exist.