"Everybody dies, but not everybody lives" is often shared as a Marcus Aurelius quote. It is not in the Meditations. We checked the three translations most people read (George Long, Gregory Hays and Robin Hard) and the line is not there in any form. Online it is also credited to the film Braveheart and to various modern writers, and we have not found a reliable first source for it.
The idea behind it is Stoic, though. Marcus and Seneca both said something close, in words you can check.
What Marcus Aurelius actually wrote
The nearest passage in the Meditations is at the start of Book 12. Marcus tells himself that the thing to fear is not dying but never having lived properly:
"...if thou shalt be afraid not because thou must some time cease to live, but if thou shalt fear never to have begun to live according to nature..."
Meditations 12.1, trans. George Long
"According to nature" matters here. For a Stoic, living well meant living with reason and good character, not collecting experiences. So the popular line keeps the shape of the thought and drops what Marcus meant by "living".
He makes the same point more bluntly in Book 4:
"Do not act as if thou wert going to live ten thousand years. Death hangs over thee. While thou livest, while it is in thy power, be good."
Meditations 4.17, trans. George Long
Seneca said it more directly
If you want a real Stoic source for "not everybody lives", Seneca's Letter 93 is the one. He is writing about a man who died young and another who reached eighty and did nothing with the time.
"We should strive, not to live long, but to live rightly; for to achieve long life you have need of Fate only, but for right living you need the soul. A life is really long if it is a full life..."
Letters 93.2, trans. Richard Mott Gummere
"A person like him has not lived; he has merely tarried awhile in life. Nor has he died late in life; he has simply been a long time dying."
Letters 93.3, trans. Richard Mott Gummere
"Let us measure them by their performance, not by their duration."
Letters 93.4, trans. Richard Mott Gummere
That second passage is about as close as the ancient sources get to the popular quote. It is also harsher than the modern version. For Seneca, eighty idle years can count for less than a short life spent doing your duty well.
Which version to use
If you are putting a line on a slide, a post or a tattoo, use one you can source. "We should strive, not to live long, but to live rightly" (Seneca, Letters 93.2) carries the same idea and it is really his. If you like the popular wording, share it without a name attached.
This page is part of our Stoic quote source audit. Other famous lines that fail the same test include "You have power over your mind" and "What we do in life echoes in eternity". For lines that hold up, see our sourced Seneca quotes.
A small practice
Seneca's test is easy to try tonight. Look back at the day and ask one question: was any of it lived, or did I just get through it? The bar is low. Were you present, on purpose, for at least one part of it?
Sources
Marcus Aurelius, Meditations 4.17 and 12.1, translated by George Long (1862). Seneca, Moral Letters to Lucilius 93.2 to 93.4, translated by Richard Mott Gummere (Loeb, 1917 to 1925). Both translations are in the public domain. The line was also checked against the Hays (2002) and Hard (2011) translations of the Meditations.
If you want structured practice, the 7-Day Stoic Challenge is free. Nine audio lessons and a 42-page workbook.