Letters from a Stoic (Epistulae Morales)

Warning: some letters discuss death and suicide directly. Seneca goes into these subjects at length in several letters. If you are going through a hard time, start by skipping those letters.

In the last two or three years of his life, while he was withdrawing from politics, Seneca wrote a hundred and twenty-four letters to his friend Lucilius, who was procurator in Sicily. That is the form we have. Its Latin name is Epistulae Morales ad Lucilium, that is, Moral Letters to Lucilius. "Letters from a Stoic" is not Seneca's title but the name of the selection Robin Campbell prepared for Penguin in 1969, and in the English-speaking world it became the book's nickname.

This piece relies on Gummere's public domain English translation, the list of the letters' titles, the publication details on Wikipedia and the sales pages of the Turkish editions. The sentences I quote from the letters are my own Turkish, made from the Gummere translation.

Who, when, to whom

Lucius Annaeus Seneca was born around 4 BC in Corduba, today's Córdoba. In AD 41 Emperor Claudius exiled him to Corsica, and the exile lasted eight years. Agrippina called him back in 49 and made him tutor to her son Nero. When Nero became emperor, Seneca advised him together with the commander Burrus until about 62. When Burrus died, his influence collapsed; he wanted to retire, and at first Nero did not allow it.

The letters come out of these years of retirement. The eighth letter falls in the spring of 62, the ninety-first letter mentions the fire of Lyon (summer of 64), and the hundred and twenty-second letter was written in autumn. In 65, after the Pisonian conspiracy, Seneca cut his own veins on Nero's orders; he very probably had no connection to the conspiracy.

Lucilius is someone we know only from these letters; it is clear that the letters were written for a wider readership. Each one opens with a greeting and closes with "Vale", that is, "farewell"; most begin with an everyday observation and arrive at a philosophical principle.

Why letters

Seneca says this plainly in the seventy-fifth letter: he wants his letters to be like conversation, as if the two of them were sitting across from each other and talking. Not an ornate speech but the language of a doctor looking after a patient. I think this choice gives away the whole concern of the book: Seneca is not lecturing; while working on himself, he calls Lucilius to his side as well.

The letters are thought to be arranged in the order they were written, and they keep getting longer: short doses at the start, long theoretical discussions at the end. The book gets heavier as it goes on, so where you start matters.

The first letters: small doses

In the early letters there is a saying from Epicurus at the end of each one. This habit ends around the thirtieth letter.

The first letter is about time, and it is the most frequently cited letter in the book. Seneca tells Lucilius to claim his time back for himself. In his view the only thing that belongs to us is time; we consider ourselves in debt for cheap things, but no one feels in debt for the time they have received. I thought of this letter several times while writing about time blindness, because what it describes is familiar: not seeing where the time flows.

The second letter is about reading, and as someone with ADHD it is the one closest to me. Seneca warns against taking a bite from many writers and digesting none of them: "everywhere means nowhere." Food that does not stay in the stomach does not nourish, and a wound does not close if you keep changing the medicine. Stay with a limited number of masters, digest one idea a day. It is like a relative, two thousand years older, of the article on app hopping on this site.

The fourth letter takes on the fear of death: children are afraid of shadows, and adults too are afraid of things that do not really exist. The seventh letter is about the crowd. Seneca goes to a gladiatorial show at midday, runs into a slaughter there with people shouting "kill, flog, burn", and writes that he came home more ambitious and harsher. His solution is measured: neither imitate the crowd nor hate it; withdraw into yourself, be with the few people who will make you better. In the eighth letter he defends his retirement; he writes that his own wounds have not fully healed but have stopped spreading. The thirteenth letter is known for this observation: we live through most of the things we fear in our imagination before they happen to us, and we suffer more than what actually happens.

The eighteenth letter was written before the Saturnalia, the winter festival. Seneca suggests that during the festival days Lucilius really eat coarse bread and wear coarse clothes for three or four days, and then ask, "is this what I was afraid of?" The twentieth letter is about the consistency between word and deed.

The middle section: turning back to yourself

The twenty-eighth letter is written to someone who travels and cannot find relief. Seneca relays what Socrates said to someone who complained: you are taking yourself along with you. What needs changing is not the place but the soul.

The thirty-third letter is the turning point of the book. Lucilius expects a saying from Epicurus at the end of every letter; Seneca refuses. A student who keeps memorizing quotations is acting like a child; he should form his own sentences. The old philosophers are guides, not masters; the truth is open to everyone. I think this is the book's inner manifesto.

The forty-seventh letter is about slaves: they too are human, we are all under the wheel of fortune, treat them with respect, not with fear. Seneca does not argue for abolishing slavery and writes openly that he does not want to go into the big question. The letter targets the master's morality, not the institution.

The fifty-sixth letter is about noise. Seneca is living above a bathhouse and lists the sounds coming from outside one by one: people lifting weights, hair pluckers, vendors. The real problem, he says, is not the noise outside but the noise inside; he also admits that his ambition still flares up now and then even in his retirement. As someone who experiences sensory overload, I do not fully agree with this, because some noises really are unbearable. But the distinction is still useful: when there is anxiety inside you, even a quiet room is not quiet. The sixty-third letter is about grieving a loss: you may weep, but do not wail; remembering a friend who has died can turn from pain to sweetness over time, and Seneca admits that he grieved his own friend Annaeus Serenus without measure.

The long letters: death, illness, knowledge

In the section running from sixty-six to ninety-two, the letters get longer. The seventieth and seventy-seventh letters openly discuss the question of choosing death; in both, Seneca argues that one should look at the quality of life rather than its length. These are the hardest letters in the book. In the seventy-eighth letter, on the other hand, he writes that during an illness in his youth he thought of dying but gave up the idea when he thought of his old father, and he leaves this sentence: sometimes even living is an act of courage. I think the three need to be read together. Seneca's stance on this subject does not fit into a single sentence.

The eighty-third letter is surprisingly like a diary: he lists how his day went, his exercise, his bath, his breakfast of stale bread, because he says he will review himself at the end of the day. It is like an ancient form of the article on the end-of-day shutdown on this site.

The eighty-eighth letter is about the liberal arts and is one of the harshest letters in the book. He questions grammar, music, geometry, arithmetic and astronomy one by one: if these do not calm your fear or your greed, if they do not give you freedom, what use are they? He says the only thing that truly sets you free is virtue. He also mocks the scholar Didymus, who wrote four thousand books. As someone who studied philosophy at ODTÜ (Middle East Technical University), I half agree with this letter: reducing knowledge to virtue alone seems too narrow to me, but the question "how did this knowledge change you" is good for anyone who works with knowledge.

In the ninety-first letter Lyon is burning. Seneca consoles his friend Liberalis, who is grieving the destruction of the city by fire, and finds the remedy in keeping disaster in mind in advance: thinking not of what usually happens but of what could happen.

The last letters: a voice that tires

The letters from ninety-three to a hundred and twenty-four are more theoretical and, to me, more tiring. The hundred and first letter describes the sudden death of Cornelius Senecio after a dinner and says to count each day as a separate life. The hundred and seventh letter contains Cleanthes' lines: fate leads the willing and drags the unwilling.

The last letter, the hundred and twenty-fourth, discusses whether the good is grasped by the senses or by reason; it argues that children and animals do not know the good. The book does not end with a farewell sentence but with a philosophical distinction. In the second century Aulus Gellius quotes from the twenty-second book of the collection; so the form we have is incomplete, and the hundred and twenty-fourth letter may not be the last letter Seneca wrote.

Selection or full translation

This is the part you need to know before buying this book. The letters as a whole are collected in twenty books. In the manuscript tradition they circulated for a long time as two separate groups, 1 to 88 and 89 to 124. The first printed edition was made in Naples in 1475, and Erasmus's much better edition in 1529.

In English the complete translations are Gummere's three-volume Loeb translation (1917 to 1925, free online) and Margaret Graver and A. A. Long's Letters on Ethics, published by the University of Chicago Press in 2015. Among the selections are Campbell's Penguin edition (40 letters according to Wikipedia), Elaine Fantham's Oxford World's Classics selection (87 letters) and Graver and Long's selection of fifty letters. Penguin's new edition came out in 2025, 352 pages.

In Turkish I saw four editions on Kitapyurdu. The Turkish Historical Society's Ahlaki Mektuplar (translated by Türkan Uzel, 1999, 338 pages), Jaguar Kitap's Ahlak Mektupları (again Türkan Uzel, 2019, 500 pages), Biblos's Törel Mektuplar (2015, 153 pages, the name Münevver Özgen appears on the page) and İlgi Kültür Sanat's Lucilius'a Ahlak Mektupları (Merve Turhan, 2026, 606 pages). None of the sales pages says clearly whether these are full texts or selections. One reader's comment on the Biblos edition says it contains only 28 of the 124 letters; I could not verify this. I suggest looking at the table of contents before buying; the page count on its own is not a sign.

My suggestion: a selection the first time, the full text the second time. A selection gives you Seneca's best moments. The full text makes you read the most tiring letters too, and seeing that tiredness is valuable for understanding that Seneca is a writer more than a system.

Its strongest points

Seneca's greatness is that he shows the moral problem while testing it on himself. He does not say "I have solved it"; he takes his own illness, his own grief, his own state on returning from the crowd as examples. The seventh, fifty-sixth, sixty-third and seventy-eighth letters are the best examples of this.

His language is also his biggest trump card. Short sentences, everyday comparisons (food, medicine, ships, wounds), irony toward himself. Everyday speech and technical terms are intertwined, and there are frequent quotations from Virgil and Horace.

Weak points and criticism

The contradiction between Seneca's life and what he wrote has been debated for centuries. In 58 Suillius accused him of amassing three hundred million sesterces by lending money. Tacitus considers Suillius biased, but that Seneca was a rich Stoic inside the palace is beyond dispute. When he recommends coarse bread in the eighteenth letter, he is writing from that position; it is worth keeping this in mind while reading.

The forty-seventh letter does not question slavery; it looks for morality in the master. Seen from today, this is a gap and, I think, one of the book's flaws.

The last letters are also the weak link. Even the titles of the eighty-fifth, hundred and eleventh and hundred and seventeenth letters show that they are busy with logic games; Seneca criticizes this tendency himself but still gets into it. For a first-time reader, the volumes at the end can be an obstacle.

Let me be clear about scientific evidence: I do not know of a study showing that Stoic exercises are good for ADHD. Some of the founders of cognitive behavioral therapy are said to have been inspired by the Stoics; that is a lineage, not evidence. Read Seneca as a thinking tool, not as a treatment.

Who it is for, and who it is not for

For the reader who wants to look at their own inner noise, who wants to read philosophy together with life, who is ready to hear hard things in a calm voice. Also for the reader who loves the notes Marcus Aurelius wrote to himself and is looking for an outward-facing Stoic voice, one written to someone else.

Who it is not for: it is too early for someone who has just been diagnosed and is in shame and grief; there, what I wrote about grief after diagnosis is the right door. In a period of mental distress, skip the seventieth and seventy-seventh letters as well. It is not for someone looking for a quick fix either: Seneca does not give a solution, he gives a habit.

Its place on the shelf

On this site the books closest to Seneca are The Myth of Sisyphus and Nicomachean Ethics. Camus asks how to stay inside meaninglessness, Aristotle builds the good life on character, and Seneca, between the two, gives a small practice to repeat every day. In the Essentialism review I drew a kinship with Seneca's essay On the Shortness of Life; the first and second letters carry the same claim by a shortcut. In the diary I worked through Stoic calm in the ataraxia entry; the letters are the background to that piece.

My stance

You do not have to finish this book from start to end, and I think you should not. Pick a few letters, read one letter while walking or drinking your coffee, and write one sentence about it at the end of the day. What Seneca says in the thirty-third letter applies here: do not memorize the book, form your own sentence.