Letters from a Stoic is the name many English readers know Seneca's Moral Letters to Lucilius by. It is a set of 124 letters from Seneca to his friend Lucilius, written in the last few years of Seneca's life, and it reads like a running course in how to live: time, fear, friendship, money, grief and death, one short letter at a time. Some books sold under this title are selections rather than the full 124, so check what you are buying. This guide covers what the letters are, what they argue, the passages worth knowing and where to start.
If you only want the best single lines, see our collection of Seneca quotes. This page is about the book itself.
What the book is
The letters are addressed to Lucilius Junior, a younger friend who served as procurator of Sicily under Nero and wrote poetry on scientific subjects. Only Seneca's side survives. Massimo Pigliucci describes the collection as a sort of informal curriculum in Stoic philosophy, and that is the best way to read it: each letter takes one problem and works through it, and many of the early ones end with a saying for Lucilius to keep.
They are short. In the public-domain Gummere translation the median letter is about 1,400 words, a sitting of ten minutes or so, and 88 of the 124 run under 2,000 words. You can read one with your morning coffee.
Who wrote it, and when
Lucius Annaeus Seneca lived from about 4 BCE to 65 CE. He was a statesman, playwright and moral writer, exiled to Corsica under Claudius, recalled to tutor the young Nero, and his adviser from 54 to 62 CE. He wrote the letters in his last few years, and in 65 CE Nero ordered him to die.
That life matters for how you read him. Seneca was very wealthy and close to a tyrant, and his critics said so at the time. He knew it, and the letters are full of a man trying to hold himself to standards he did not always meet. For his own answer to the charge, see our page of Stoic quotes on wealth and money.
What the letters argue
There is no single thesis. The letters keep returning to a handful of ideas, and these are the ones most worth knowing.
Time is the only thing you own
The very first letter is about time, and the theme never really leaves.
Nothing, Lucilius, is ours, except time.
Seneca, Letters 1.3 (trans. Richard M. Gummere)
What man can you show me who places any value on his time, who reckons the worth of each day, who understands that he is dying daily?
Seneca, Letters 1.2 (trans. Richard M. Gummere)
Most fear is imagined
There are more things, Lucilius, likely to frighten us than there are to crush us; we suffer more often in imagination than in reality.
Seneca, Letters 13.4 (trans. Richard M. Gummere)
Philosophy is something you do
Seneca has little patience with philosophy as clever talk. For him it is a guide to action.
It moulds and constructs the soul; it orders our life, guides our conduct, shows us what we should do and what we should leave undone
Seneca, Letters 16.3 (trans. Richard M. Gummere)
philosophy teaches us to act, not to speak
Seneca, Letters 20.2 (trans. Richard M. Gummere)
Choose your company, and your reading, with care
Associate with those who will make a better man of you. Welcome those whom you yourself can improve. The process is mutual; for men learn while they teach.
Seneca, Letters 7.8 (trans. Richard M. Gummere)
Everywhere means nowhere.
Seneca, Letters 2.2 (trans. Richard M. Gummere), on skimming too many books
No good thing is pleasant to possess, without friends to share it.
Seneca, Letters 6.4 (trans. Richard M. Gummere)
Friendship is one of the great subjects of the letters. Our page of Seneca quotes on friendship collects the rest.
You cannot run away from yourself
your faults will follow you whithersoever you travel.
Seneca, Letters 28.2 (trans. Richard M. Gummere)
I am not born for any one corner of the universe; this whole world is my country.
Seneca, Letters 28.4 (trans. Richard M. Gummere)
The same humanity in everyone
Letter 47, on how to treat slaves, insists on the shared humanity of master and slave.
Kindly remember that he whom you call your slave sprang from the same stock, is smiled upon by the same skies, and on equal terms with yourself breathes, lives, and dies.
Seneca, Letters 47.10 (trans. Richard M. Gummere)
Grief, and gratitude for what you had
Fortune has taken away, but Fortune has given.
Seneca, Letters 63.7 (trans. Richard M. Gummere)
For more on how Seneca handles loss, across the letters and his three consolations, see Stoicism and grief.
How to use it
- One letter a day. They were written to be read one at a time, so read them that way. Ten minutes is enough.
- Keep one line. Seneca does this himself. "Let me share with you the saying which pleased me to-day" (Letters 4.10) is how one of the early letters closes, and many others end the same way. Copy one sentence from each letter into a notebook.
- Apply it the same day. If the letter is about time, notice where yours goes. If it is about fear, ask of one worry whether it is real or imagined (Letters 13.4).
- Read Seneca as a person, not a saint. He contradicts himself and he did not live up to all of it. That makes him more useful, not less, because he is working on the same problems you are.
Where to start reading
You can read the letters in order, and the early ones are deliberately simple. If you want a shorter route in, try these first:
- Letter 1, on saving time.
- Letter 2, on reading a few books well instead of many badly.
- Letter 7, on crowds and the company you keep.
- Letter 13, on groundless fears.
- Letter 28, on why travel does not cure unhappiness.
- Letter 47, on master and slave.
- Letter 63, on grief for lost friends.
On translations: Richard M. Gummere's Loeb translation (1917 to 1925) is complete, public domain and free to read online, and it is the version quoted on this page. Its English is old-fashioned in places. Pigliucci recommends the modern translation published as Letters on Ethics if you want smoother prose.
For a related theme, see Stoic quotes on the present moment, which draws heavily on Letter 1.
Sources
- Seneca, Letters 1.2, 1.3, 2.2, 4.10, 6.4, 7.8, 13.4, 16.3, 20.2, 28.2, 28.4, 47.10, 63.7, trans. Richard M. Gummere (Loeb, 1917 to 1925).
- Massimo Pigliucci, Think Like a Stoic (The Great Courses guidebook, 2021), Lesson 9, pp. 66 to 72, for Lucilius, the dating of the letters and the reading recommendation.
If you want structured practice, the 7-Day Stoic Challenge is free. Nine audio lessons and a 42-page workbook.