“Remember that all is opinion. For what was said by the Cynic Monimus is manifest”, Marcus Aurelius wrote to himself in the second book of his Meditations. The claim packed into that short line is bold: the things that happen to you are, in themselves, neither good nor bad. Your verdict on them supplies all of that.
Marcus was not writing for readers. The Meditations were private notes, reminders he set down for his own use. So 2.15 is not an argument. It is a compressed reminder, a single phrase standing in for a whole way of looking at the world.
The claim: events arrive neutral
The idea did not begin with Marcus. It runs through the whole Stoic school, and perhaps its sharpest statement belongs to Epictetus, a former slave who taught a generation later. In his handbook, Epictetus opens by drawing a line:
“Within our power are opinion, motivation, desire, aversion, and, in a word, whatever is of our own doing; not within our power are our body, our property, reputation, office”.
Your judgment sits on the near side of that line. Almost everything else sits on the far side.
Follow that through and Marcus’s shorthand makes sense. If an event is outside your control and carries no built-in verdict, then the distress it causes is not coming from the event. It is coming from the opinion you attach to it. The suffering lives in the layer of judgment.
Why the line feels wrong
Most people meet this claim with resistance, and the resistance is worth taking seriously. A diagnosis is not “mere opinion.” Losing a job is not neutral. The reflex to push back is not a failure to understand the Stoics. It is the exact objection their critics have pressed for centuries.
Part of the trouble is the word “opinion” itself. Read casually, it slides toward “everything is subjective” or “nothing is really real,” and the maxim starts to sound like permission to deny plain facts. Translators do not even agree on how far the line reaches. Farquharson gives it as “Everything is what you judge it to be”. The exact force of 2.15 is contested, not settled.
What “opinion” actually meant
The Stoic sense is narrower than the casual one. They were not saying the fire is not hot or the loss did not happen. They were saying that the value judgment, the “this is a catastrophe” or “this ruins everything,” is a separate act. The mind adds it after the fact, and it belongs to the mind.
This is where the idea has had its longest afterlife. The Stoic assumption that we are disturbed by our views of things rather than by the things themselves became a stated influence on cognitive behavioural therapy, with Aaron Beck and Albert Ellis both crediting the Stoics. The core move of that therapy, catching a thought and asking whether it fits the facts, is 2.15 turned into a technique. That history shows influence, not proof that the philosophy is true.
Where the idea strains
The strongest reading of the Stoic line is also its most demanding. As Jon Brooks puts it, “The Stoic claim is narrower and stranger: these things are not yours, because they can be taken from you without your consent.” Your body, your reputation, the people you love: all removable, all therefore not truly yours to count on. That is Brooks’s framing rather than a universally agreed reading, but it captures why the philosophy can feel cold.
Grief is where the strain shows most. Tell someone that their loss is “opinion” and you risk turning a philosophy of resilience into an instruction to suppress. Critics have long made this charge, and it is not a straw figure. Reviewing the tradition, philosopher Matthew Sharpe argues that in Seneca’s reading “grief in response to the death of loved ones, for a period, is wholly natural.”
If any of this touches something you are carrying now, a grief that a maxim cannot reach, a qualified counsellor or therapist is a better companion than a Roman notebook.
Stripped of the overreach, a usable core remains. Between an event and your response there is a gap, and in that gap sits a judgment you had some hand in. The Stoics claimed you can notice it. They did not claim it is easy, and Marcus, writing these reminders to himself night after night, plainly did not find it easy either.
Read as what it was, a note a tired administrator left for himself, it asks something smaller and harder to dismiss: before you decide an event has ruined your day, check whether the ruin is in the event or in the verdict you just passed on it. The line does not promise the verdict will be wrong. It only asks you to notice that you were the one who made it.
