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It gets stitched onto graduation cards. It goes on wall plaques above kitchen doorways. It turns up in leaving speeches, in the caption under a photo of somebody starting over, and in a very large number of tattoos.
Six words, and they sound like permission.
They are not six words. They are the first line of three, and Shakespeare did not put them in the mouth of a hero.
Here is the whole thing, from Hamlet, Act 1, Scene 3:
“This above all: to thine own self be true,
And it must follow, as the night the day,
Thou canst not then be false to any man.”
The man saying it is Polonius. About one act later, he sends a servant to Paris to tell lies about his own son.
The two lines nobody quotes are the argument
Read the first line on its own and it sounds like a permission slip. Be yourself. Trust your gut. Do not let anyone talk you out of who you are.
Read all three and it is not a permission slip at all. It is an argument, and it is going somewhere.
The word doing the work is “true,” and in that sentence it is sitting right next to its opposite: “false.” True and false, paired like that, are not about being authentic. They are about being honest — the sense we still use when we call somebody a true friend, or say a person was true to their word.
So the claim is this: get straight with yourself, and being straight with everybody else follows automatically. As night follows day. No effort, no second step.
That is a far bigger claim than the poster version. It is also one you can test.
And it arrives at the end of a list. The lines just before it are not about the soul at all. They are about conduct:
- “Give thy thoughts no tongue.”
- Be “familiar, but by no means vulgar.”
- “Give every man thy ear, but few thy voice.”
- Dress well, because “the apparel oft proclaims the man.”
- “Neither a borrower nor a lender be.”
Notice what those are for. Keep your opinions to yourself. Be friendly, but not too friendly. Listen more than you talk. Look the part, because people judge by it. Do not lend money and do not borrow it.
That is a manual for arriving in a foreign city and being well thought of. It is a father worrying about how his son will look abroad.
And then, on top of the pile: this above all, to thine own self be true.
Here is our reading. The line is not a release from the list. It is the roof over it. Polonius is not telling his son to follow his heart. He is telling him that a man who is honest on the inside will not have to work at being honest on the outside — so get the inside right, and the rest looks after itself.
That is a sterner sentence than the one on the plaque. It is also, if it were true, an enormous relief.
The scene is a doorstep, and the boy is already late
Act 1, Scene 3. Laertes is leaving Denmark for France. His bag is packed, his sister is standing there, and he is halfway out of the door.
His father catches him anyway. The speech opens with Polonius saying, “Yet here, Laertes?” — still here? — and then holding him in place for one more round of advice. Every parent who has ever delivered a final lecture through a car window knows this moment exactly.
It ends: “Farewell. My blessing season this in thee!”
Then the boy goes, and the rest of the play happens.
The man who says it
Polonius is the king’s chief counsellor. He is not the hero, and the play does not treat him as a sage.
He dies in Act 3, Scene 4, stabbed through a curtain while eavesdropping on a private conversation between Hamlet and his mother. Hamlet’s words standing over the body:
“Thou wretched, rash, intruding fool, farewell! I took thee for thy better.”
A little later, Hamlet drags him out with a line that has lost none of its coldness in four hundred years: “I’ll lug the guts into the neighbour room.”
Plenty of readers have taken that as the play’s verdict and stopped there. It is worth not stopping there, and we will come back to it.
One act later, he is teaching a servant how to lie
The next scene Polonius turns up in is Act 2, Scene 1. He has a servant, Reynaldo, and he is sending him to Paris.
Not to carry a letter. To spy on Laertes.
And not simply to ask around, either. Polonius coaches him, at length, in a technique. Reynaldo is to find the Danes in Paris, work his way into conversation, claim slight acquaintance with the young man, and then invent faults for him. Polonius supplies the menu himself: “drinking, fencing, swearing, quarrelling.”
The idea is that a stranger, hearing the boy slandered, will jump in to correct the record — and give away what he actually knows.
Polonius has a name for the method, and he is pleased with it:
“Your bait of falsehood takes this carp of truth; and thus do we of wisdom and of reach, with windlasses and with assays of bias, by indirections find directions out.”
Now hold that against what he said at the door.
Be true to yourself, and it will be impossible for you to be false to anyone. About one act later, in the same house, the same man is teaching a servant to be false about that same son, deliberately, as a craft — and calling it wisdom.
The striking part is that he is not being cynical. He does not think of himself as a liar. He thinks of himself as a careful father using a clever method. He is entirely sincere.
Nobody has ever agreed that he is a fool
This is where the easy version of this article would finish, and finishing there would be wrong.
The idea that Polonius is a windbag, and that his advice is therefore a joke, is a modern habit rather than a settled fact. Critics have been arguing about him for centuries, and the argument has mostly gone the other way.
Samuel Johnson, in the notes to his 1765 edition of Shakespeare, described Polonius as “a man bred in courts, exercised in business, stored with observation, confident of his knowledge, proud of his eloquence, and declining into dotage.” He offered “dotage encroaching upon wisdom” as the key to the whole character. Read that carefully. Johnson is not saying fool. He is saying a genuinely able man, going.
William Hazlitt went further in Characters of Shakespear’s Plays in 1817. He took the objection head on — that Polonius “acts very foolishly and talks very sensibly” — and said there was no inconsistency in it at all. The advice to Laertes he gives “as a father, and is sincere in it.” The ridiculous advice he gives elsewhere he gives “as a mere courtier, a busy-body.” Hazlitt’s summary is one of the best sentences anyone has written about the character: “Polonius is not a fool, but he makes himself so.”
The defence is still being made. Sean Keilen, a professor of literature at the University of California, Santa Cruz, wrote for the Folger Shakespeare Library in May 2026 that the wisdom in these lines “is precious, no matter how many other things in the play he gets grievously wrong,” and noted that earlier generations of readers cherished the speech as “golden precepts.”
The scholar Jeffrey R. Wilson has put it more bluntly still, arguing that we have been reading Polonius through the eyes of his enemy. Hamlet is the one who calls him a fool — and Hamlet has just killed him.
So not a fool who blundered into something wise. An able, experienced, sincere man who could not see himself clearly. That is a far more uncomfortable thing to be. It is also a far more common one.
What got dropped, and what it cost
Something happens to a sentence when you cut it loose from the two lines that finish it.
With them, “to thine own self be true” is a premise. The point is the destination: you will not be able to lie to other people.
Without them, it has nowhere to go. It is an instruction with no object. Be true to yourself — and then what?
The modern answer is: and that’s it. That is the whole thing. Somewhere along the way the line stopped being a claim about honesty and became a claim about identity. It went from integrity cannot be split in two to you are allowed to be who you are.
That second sentence is not a bad sentence. Plenty of people have badly needed to hear it. It is simply not the one Shakespeare wrote, and it is not what a worried father was saying on a doorstep in Act 1.
But which self?
Take the argument seriously for a moment, because it deserves it.
If you are honest with yourself, you cannot be dishonest with anyone else. Night follows day.
The whole thing rests on one assumption, and the assumption is never spoken aloud: that you can see yourself clearly. That the self you are being true to is the self that is actually there.
Polonius assumed exactly that. He was sincere the whole way down. He was also, within the hour, arranging to have his son slandered by a stranger, and it never once crossed his mind that this was the thing he had just warned against. His conscience was clean. His instrument was broken. He was measuring himself with himself.
The play does not solve this. It just lets you watch it happen.
The question, though, is much older than the play — and somebody did write down an answer.
The Psalms are the oldest sustained honest writing about the inside of a person that we have. The complaining is left in. So is the doubling back, and the anger. And when the writer of Psalm 139 arrives at this exact problem, the move made is the opposite of the one on the plaque:
“Search me, O God, and know my heart: try me, and know my thoughts: And see if there be any wicked way in me, and lead me in the way everlasting.” — Psalm 139:23-24
That is not be true to yourself. That is: I cannot get a clear look from in here, so look for me.
It assumes the one thing Polonius could not afford to assume — that there might be something inside a person which that person cannot find alone. So the writer stops auditing himself and asks to be audited.
There is no suggestion that Shakespeare had that psalm in mind, and no reason to claim it. The point is smaller and stranger than influence. Two writers, thousands of years apart, walked up to the same doorway. One went through it. The other stood in it, told his son to be true to himself, and then went and hired a spy.
Where to leave it
The quote is not ruined. It might even be right.
What changes is that it stops being permission and goes back to being a claim — one with a condition attached that its own speaker could not meet.
Be true to yourself, yes. But the sentence quietly assumes you already know which self that is, and that is the part nobody puts on the wall. It does not fit, and it is not comforting.
Most of us learn what we actually value the slow way, by watching what we do when it costs something. And it usually takes somebody else to point it out.
So if you want the full version of the advice, it is probably closer to this. Be true to yourself — and get somebody honest to check.
If it is the situation behind a famous line that interests you, “the unexamined life is not worth living” was said in a courtroom by a man who could have saved his own life by taking it back, and “what doesn’t kill you makes you stronger” was written in the first person by a man who collapsed four months later. And if the question of which self is the live one for you, our free core values check walks you through what you actually prize when it costs something.
A question worth sitting with
Which saying did you keep on the wall for years before you found out what came after it? Or the other way round — which line have you always taken as an author’s own wisdom, only to learn it belonged to a character the story does not trust? Almost all of us are carrying at least one. Tell us the one that surprised you most.
Share this
- I had no idea. “To thine own self be true” is not Shakespeare giving advice — it is Polonius, and about one act later he sends a servant to Paris to spread lies about his own son to see what people will let slip.
- The quote has two more lines: “And it must follow, as the night the day, thou canst not then be false to any man.” Without them it is permission. With them it is an argument — and the argument assumes you can see yourself clearly.
- Critics have defended Polonius for centuries. Hazlitt wrote in 1817: “Polonius is not a fool, but he makes himself so.” Which is worse, and much more familiar.
Questions people are asking
Who said “to thine own self be true”?
The character Polonius says “to thine own self be true,” in William Shakespeare’s Hamlet, Act 1, Scene 3. He is the king’s chief counsellor in the play, and he says it to his son Laertes, who is leaving Denmark for France. So the words are Shakespeare’s, but they are not Shakespeare speaking in his own voice — they are given to a particular character in a particular situation, which is a father delivering one last round of advice to a son already halfway out of the door.
What does “to thine own self be true” actually mean?
“To thine own self be true” means be honest with yourself, and the two lines that follow explain why it matters: “And it must follow, as the night the day, thou canst not then be false to any man.” Polonius is making an argument, not granting permission. His claim is that a person who is straight on the inside will not be able to deceive anyone on the outside — honesty at the centre works its way out. In modern use the line is usually shortened to the first six words and read as encouragement to be yourself or follow your instincts. That is a different idea. The full three lines are about integrity holding together; the shortened version is about identity.
Is “to thine own self be true” in the Bible?
No. “To thine own self be true” is not in the Bible, in any translation. The old-fashioned wording — thine, thou canst — makes it sound like the King James Version, which is probably why so many people assume it is scripture. It is from Shakespeare’s Hamlet, first performed around the turn of the seventeenth century, and the King James Bible appeared in 1611, so the two share an era and a style of English. Scripture actually approaches the same question from the opposite direction. Psalm 139:23-24 reads: “Search me, O God, and know my heart: try me, and know my thoughts: And see if there be any wicked way in me, and lead me in the way everlasting.” That is a request to be examined from outside, rather than an instruction to consult yourself.
What comes after “to thine own self be true”?
Two more lines come after “to thine own self be true,” and they are the part almost nobody quotes. The full passage is: “This above all: to thine own self be true, / And it must follow, as the night the day, / Thou canst not then be false to any man.” It also has a run-up. Immediately before it, Polonius gives Laertes a string of practical instructions about how to conduct himself abroad — “Give thy thoughts no tongue,” be “familiar, but by no means vulgar,” “Give every man thy ear, but few thy voice,” and “Neither a borrower nor a lender be.” The famous line is the last item on that list, not a standalone motto.
Is it “to thine own self be true” or “to thine ownself be true”?
Both spellings are in print, and the wording is identical either way. Most modern editions set it as three words — “to thine own self be true” — while some editions run the last two together as “ownself.” Early printed texts of Hamlet differ from one another in hundreds of small ways like this, and editors have to choose. You will also see it written as “to thy own self be true,” and searched as “to thine own self be true meaning” or “who said to thine own self be true.” None of these change the sense of the line, and all of them come from the same speech in Act 1, Scene 3.
