Lucilius has just heard a celebrity philosopher who talks like a flash flood — words crashing over each other faster than one voice can say them. Seneca isn’t impressed. In this warm and witty letter he argues that how we speak reveals how we live, that words meant to heal the mind have to sink in to work, and that the wise person’s speech, like their life, should be calm, controlled, and unhurried. His final advice fits in four words: be slow of speech.
From Seneca to Lucilius
Thank you for writing to me so often. You’re showing me your real self in the only way you can. I never get a letter from you without feeling, right away, that we’re together. If pictures of absent friends please us — even though they only refresh the memory and ease our longing with a comfort that is empty and unreal — how much more pleasing is a letter, which brings real traces, real evidence, of a friend who is far away! Because the sweetest thing about meeting face to face is also given to us by a friend’s handwriting on a letter: recognition.
The Philosopher Who Talked Like a Flood
You tell me you heard a lecture by the philosopher Serapio when he landed where you’re living now. “He tends,” you say, “to haul up his words in a mighty rush. He doesn’t let them flow out one at a time; he makes them crowd and crash into each other. The words come in such a mass that a single voice isn’t enough to say them all.”
I don’t approve of this in a philosopher. His speech, like his life, should be composed — and nothing that rushes headlong and hurries is well ordered. That’s why, in Homer, the rapid style that sweeps down without a break like a snowstorm is given to the younger speaker, while from the old man eloquence flows gently, sweeter than honey.
Neither a Torrent Nor a Drip
So take it from me: that forceful way of talking, fast and abundant, suits a street performer better than a person discussing and teaching something important and serious. But I object just as much to someone who drips his words out as to someone who goes at top speed. He should neither keep the ear straining nor deafen it.
That thin, starved, threadbare style also makes the audience less attentive, because they get tired of its halting slowness. Still, a word you’ve waited for sinks in more easily than a word that flies past you on the wing. Besides, people talk about “handing down” lessons to students — but you can’t hand down something that slips out of the grasp.
Healing Words Have to Sink In
Besides, speech that deals with the truth should be unadorned and plain. This crowd-pleasing style has nothing to do with the truth. Its aim is to impress the masses and sweep careless ears off their feet with speed. It doesn’t offer itself up for discussion; it snatches itself away from it. And how can speech govern others when it can’t even govern itself?
And may I also point out that all speech meant to heal our minds ought to sink into us? Remedies do no good unless they stay in the system.
Besides, this kind of speech holds a lot of pure emptiness; it has more sound than power. My fears need calming, my irritations soothing, my illusions shaking off, my indulgences checking, my greed scolding. Which of these cures can be done in a hurry? What doctor can heal a patient on a flying visit? And may I add that such a jumble of confused, badly chosen words can’t even give pleasure?
Once Is Enough
No — just as, most of the time, you’re satisfied once you’ve seen through a magic trick you didn’t think could possibly be done, so with these word-acrobats: hearing them once is plenty. What could anyone want to learn from them, or imitate? And what should you think of their souls, when their speech charges out in complete disorder and can’t be held in check?
When you run downhill, you can’t stop at the spot where you meant to stop; your steps are carried along by your body’s momentum and taken past the place where you wanted to halt. In the same way, this speed of speech has no control over itself. Nor is it fitting for philosophy, since philosophy should place her words carefully, not fling them out, and should move forward step by step.
Power Under Control
“Well then,” you say, “shouldn’t philosophy sometimes rise to a loftier tone?” Of course she should. But dignity of character has to be preserved, and this kind of violent, excessive force strips it away. Let philosophy have great power, but keep it well under control; let her stream flow without ceasing, but never become a torrent.
I’d hardly allow even a courtroom speaker this kind of speed — speech that can’t be called back and runs ahead without any rules. How could jurors follow it, when they’re often inexperienced and untrained? Even when a speaker is carried away by a desire to show off or by emotion he can’t control, even then he shouldn’t speed up and pile on words beyond what the ear can bear.
Better the Stammerer
So you’ll be doing the right thing if you pay no attention to people who care about how much they can say rather than how they say it, and if, when a choice has to be made, you choose to speak the way Publius Vinicius the stammerer does. When Asellius was asked how Vinicius spoke, he answered, “Gradually!” (It was Geminus Varius, by the way, who remarked, “I don’t see how you can call that man eloquent; he can’t get three words out in a row.”) So why not choose to speak as Vinicius does?
Of course, some joker may cross your path — like the man who, while Vinicius was dragging out his words one at a time as if he were dictating rather than speaking, said, “Say, don’t you have anything to say?” Even so, that would be the better choice. Because the speed of Quintus Haterius, the most famous orator of his day, is something a sensible person should avoid, in my opinion. Haterius never hesitated, never paused. He made only one start and only one stop.
A Roman Pace
Still, I suppose certain styles of speech suit certain nations more or less. In a Greek you can put up with an unrestrained style, but we Romans, even in writing, have grown used to separating our words. And our own Cicero, with whom Roman oratory leapt into prominence, was a steady walker too. The Roman language is more inclined to take stock of itself, to weigh things, and to offer something worth weighing.
Fabianus — a man remarkable for his life, his learning, and, less important than either, his eloquence — used to handle a subject briskly rather than hastily. You could call it ease rather than speed. I approve of that quality in a wise person, but I don’t demand it. Just let his speech move along without getting stuck — though I’d rather it be spoken with care than gushed out.
The Cost of Speed
But I have one more reason for scaring you away from that other affliction: you could only succeed at that style by losing your sense of modesty. You’d have to rub all shame off your face and refuse to listen to yourself speak. Because that careless flood will carry along plenty of expressions you’d want to criticize. And, I repeat, you couldn’t manage it and still keep your sense of shame.
What’s more, you’d need to practice every day and shift your attention from substance to words. But words — even if they came to you readily and flowed with no effort at all — would still have to be kept under control. Just as a quieter walk suits a philosopher, so does a restrained way of speaking, far from bold display. So here is the heart of everything I’ve said: I bid you be slow of speech.
Farewell.
Breaking It Down: A Modern Take on Letter 40
We live in an age of fast talkers — podcasts at double speed, hot takes, influencers who never seem to breathe. Letter 40 is Seneca’s case for the opposite. He isn’t just giving tips on public speaking; he’s saying that the way we talk is a window into the way we live, and that words meant to help people need time to land.
1. Letters Carry the Person
Seneca opens with a beautiful thought about friendship at a distance: “how much more pleasing is a letter, which brings real traces, real evidence, of a friend who is far away!” A photo reminds us of someone; a letter, written in their own voice, actually brings them near. That’s worth remembering in an age of quick texts.
2. Speech Mirrors Life
The central claim of the letter: “His speech, like his life, should be composed.” If someone’s words are always rushing, crashing, and out of control, Seneca suspects their inner life is too. Calm speech grows out of a calm mind.
3. Find the Middle Pace
Seneca isn’t asking for painfully slow speech either. A good teacher “should neither keep the ear straining nor deafen it.” The goal is a pace that respects the listener — fast enough to hold attention, slow enough to be followed.
4. Truth Doesn’t Need Decoration
“Speech that deals with the truth should be unadorned and plain.” Flashy delivery is often a sign the speaker cares more about impressing than informing. Truth tends to be simple; it doesn’t need fireworks.
5. Medicine Must Be Absorbed
Here’s the clinical heart of the letter: “Remedies do no good unless they stay in the system.” Philosophy is meant to heal, and healing takes absorption. Words that blow past us can’t change us.
6. No Cure on a Flying Visit
Seneca lists what he needs — fears calmed, greed scolded, illusions shaken off — and then asks, “What doctor can heal a patient on a flying visit?” Real change requires time and attention, from both the healer and the one being healed.
7. More Sound Than Power
He dismisses rapid-fire speech in one phrase: “it has more sound than power.” Volume and velocity can be mistaken for substance. Seneca asks us to listen for the substance.
8. The Magic-Trick Test
Some speakers are like a clever trick: astonishing once, pointless after that. “Hearing them once is plenty.” A good teacher is someone you want to hear again because there’s always more to learn.
9. Place Words, Don’t Fling Them
His downhill-running image is perfect: momentum carries you past where you meant to stop. That’s why “philosophy should place her words carefully, not fling them out.” Anyone who’s ever said more than they meant in an argument knows this one.
10. Strength With Restraint
Seneca isn’t against passion: “Let philosophy have great power, but keep it well under control; let her stream flow without ceasing, but never become a torrent.” Power you can steer is useful. Power that steers you is dangerous.
11. How, Not How Much
He warns against people who care about “how much they can say rather than how they say it.” Word count isn’t wisdom. Choosing the right words, at the right pace, is.
12. Slow Beats Showy
Seneca would rather Lucilius speak like Vinicius the stammerer than like Haterius, the star orator who “made only one start and only one stop.” It’s a surprising choice, and a humble one: careful and halting beats dazzling and uncontrolled.
13. Speed Costs You Your Modesty
Finally, Seneca points to a hidden price. To talk like a torrent, you’d have to stop listening to yourself, because the flood would carry out things you’d regret. His verdict: “Just as a quieter walk suits a philosopher, so does a restrained way of speaking.”
Key Takeaways from Letter 40
- Letters bring people close: a friend’s own words carry real traces of them.
- Your speech reflects your life: a composed mind speaks in a composed way.
- Find a humane pace: don’t strain the ear, and don’t deafen it.
- Keep truth plain: honest ideas don’t need flashy delivery.
- Help has to sink in: remedies only work if they stay in the system.
- Change takes time: no doctor heals a patient on a flying visit.
- Don’t confuse noise with substance: fast talk often has more sound than power.
- Look for teachers worth hearing twice: dazzle wears off; depth doesn’t.
- Place your words: momentum carries careless speech past where you meant to stop.
- Keep passion under control: a steady stream, never a torrent.
- Care about how, not how much: fewer, better words win.
- Protect your modesty: nonstop talking means you stop listening to yourself.
- Be slow of speech: Seneca’s four-word summary of the whole letter.
“Remedies do no good unless they stay in the system.”
— Seneca, Letter 40
Keep Seneca With You
If this letter spoke to you
Marcus Aurelius’s private notebook, in Gregory Hays’s readable translation.
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Next up: Letter 41 — On the God Within Us
