Keep at-hand principles.
Here is advice to do precisely what I am attempting to do with this collection: create an easily accessible tool that reminds me, whenever needed, of what is really important and how to think about it. (Below, keep in mind that “divine” can just as well be interpreted as “natural” in Stoic parlance.)
As physicians have always their instruments and knives ready for cases that suddenly require their skill, so do you have principles ready for the understanding of things divine and human, and for doing everything, even the smallest, with a recollection of the bond that unites the divine and human to each other. (Meditations III.13, see also end of IV.3, V.16 and VII.2)
Why am I doing this?
We are purposeful animals, and yet much of what we do seems to be not particularly well thought out. The Stoic advice is to consider carefully what we are doing and why. Life is short, make the best (i.e., the most virtuous) of it.
Let no act be done without a purpose, nor otherwise than according to the perfect principles of art. (Meditations IV.2, see also VIII.2)
Marcus here is talking about “indifferents,” that is things that may be preferred or dispreferred, but are not an intrinsic component of virtue — like wealth, material possessions, reputation, and the like. The suggestion is to train oneself to do without them, at the least from time to time, to both remind us that they are not crucial for eudaimonia, as well as to better appreciate them when we do have them.
The more of these things a man deprives himself of, or of other things like them, or even when he is deprived of any of them, the more patiently he endures the loss, just in the same degree he is a better man. (Meditations V.15)
The one below is another famous excerpt from Marcus, where he prods himself to look at the basic constituents of things and actions, appreciating anew that they are material things to which all too often we attribute more importance than they do in fact have. To put things in context, the bit about sexual intercourse probably should not be interpreted as prudish (Marcus did, after all, have 13 children!), but rather as a check against lust for lust’s sake.
When we have meat before us and such eatables, we receive the impression that this is the dead body of a fish, and this is the dead body of a bird or of a pig; and again, that this Falernian is only a little grape juice, and this purple robe some sheep’s wool dyed with the blood of a shellfish; or, in the matter of sexual intercourse, that it is merely an internal attrition and the spasmodic expulsion of semen: such then are these impressions, and they reach the things themselves and penetrate them, and so we see the things as they truly are. Just in the same way ought we to act all through life, and where there are things that appear most worthy of our approbation, we ought to lay them bare and look at their worthlessness and strip them of all the words by which they are exalted. For outward show is a wonderful perverter of reason, and when you are most sure that you are employed about things worth your pains, it is then that it cheats you most. (Meditations VI.13, see also III.11, VIII.11, XI.2, XI.16 and XII.10)
Acknowledging others’ virtues.
This is one version of the common Stoic idea of reminding oneself of role models, because virtue cannot be learned just by way of theory, it requires examples and practice.
When you wish to delight yourself, think of the virtues of those who live with you; for instance, the activity of one, the modesty of another, the liberality of a third, and some other good quality of a fourth. For nothing delights so much as the examples of the virtues when they are exhibited in the morals of those who live with us and present themselves in abundance, as far as is possible. Hence we must keep them before us. (Meditations VI.48, though also see all of book I)
Take another’s perspective.
A wonderful exercise in humility, reminding us to step in another person’s shoes to at the least attempt to see things from their perspective, before passing judgment.
When a man has done you wrong, immediately consider with what opinion about good or evil he has done wrong. For when you have seen this, you will pity him, and will neither wonder nor be angry. For either you yourself think the same thing to be good that he does or another thing of the same kind. It is your duty then to pardon him. But if you do not think such things to be good or evil, you will more readily be well disposed to him who is in error. (Meditations VII.26, see also IX.34)
View from above.
A classic Stoic exercise: seeing things from a distance helps us put them in the proper (cosmic) perspective.
You can rid yourself of many useless things among those that disturb you, for they lie entirely in your imagination; and you will then gain for yourself ample space by comprehending the whole universe in your mind, and by contemplating the eternity of time, and observing the rapid change of every part of everything, how short is the time from birth to dissolution, and the illimitable time before birth as well as the equally boundless time after dissolution. (Meditations IX.32, see also VII.48 and XII.24 — third exercise)
How did they (not) sin?
Short, profound, and rather self-explanatory.
If any man has done wrong, the harm is his own. But perhaps he has not done wrong. (Meditations IX.38)
Keep change and death in mind.
Change and death are inevitable, that is why we need to focus on what we do here and now, hic et nunc.
Acquire the contemplative way of seeing how all things change into one another, and constantly attend to it, and exercise yourself about this part of philosophy. For nothing is so much adapted to produce magnanimity. … Consider in what condition both in body and soul a man should be when he is overtaken by death; and consider the shortness of life, the boundless abyss of time past and future, the feebleness of all matter. (Meditations X.11 and XII.7, see also X.18, X.19 and X.29)
A handy reminder of how silly it is to get offended at someone else’s behavior or words.
When you are offended at any man’s fault, immediately turn to yourself and reflect in what manner you yourself have erred: for example, in thinking that money is a good thing or pleasure, or a bit of reputation, and the like. (Meditations X.30, see also IX.42)