Don't Say What You Know To Be Untrue
Use the conscience as an instrument: it wakes you at four in the morning for a reason.
- Difficulty
- Advanced
- Time to result
- ~ongoing to results
- Steps
- 6
- Confidence
- 92%
Asked what it would mean to actually try the story of the hero rather than discard it, Peterson gives two things. It means to practise love, which means assume that things are valuable and act according to that assumption; and it requires truth, which is: do not say what you know to be untrue. The formulation is deliberately negative and therefore checkable — it does not require you to possess the truth, only to refrain from asserting what you know to be false. He grounds it in the first sentence of Genesis read in the context of the broader biblical narrative, where what appears to be happening is a proposition that god is guided by love and uses truth to create, with love as something like the wish that all being would flourish. His argument that this is not arbitrary is that everyone already knows it: you never teach someone you love to lie, and you are always appalled if your son or daughter does not tell the truth. And the instrument that enforces it is the conscience, which he treats as evidence precisely because it is not under your control — you do not wake at four in the morning berating yourself for telling the truth, you wake berating yourself for violating your conscience. It is not you; you are responsible to it; it holds you accountable; it transcends you. His challenge to anyone who thinks it is nothing is empirical: violate it for a while and see what happens.
Origin
Peterson traces the pairing of love and truth to his attempt to unpack the first sentence of Genesis in the context of the broader biblical narrative. The urgency behind it came from Maps of Meaning, which he wrote because he was deeply affected by accounts of the Second World War, Germany, the Soviet Union and China, and wanted to understand malevolence.
Core principles
- 01The minimum viable rule is negative and checkable: do not say what you know to be untrue.
- 02Its pair is love, which Peterson defines operationally as assuming that things are valuable and acting according to that assumption.
- 03Everyone already knows this — you never teach someone you love to lie, and you are always appalled if your son or daughter does not tell the truth.
- 04If you do not tell the truth the world falls apart, and Peterson holds that this is actually true rather than merely edifying.
- 05The conscience is the instrument: you do not wake at four in the morning berating yourself for telling the truth, you wake berating yourself for violating your conscience.
- 06You cannot control your conscience, which is what makes it evidential — it is not you, you are responsible to it, it holds you accountable, it transcends you.
- 07Peterson's empirical test for anyone who thinks the conscience is nothing: violate it for a while and see what happens.
How to run it
- 1
Adopt the negative formulation
The rule is not tell the truth but do not say what you know to be untrue. It requires no epistemic certainty, only that you decline to assert what you already know is false.
Pro tip The negative form is what makes it applicable in real time, sentence by sentence.
- 2
Pair it with love as an operational stance
Peterson gives two things, not one. Practise love, which means assume that things are valuable and act according to that assumption, and require truth. Truth without the value assumption becomes a weapon.
Pro tip His maximal gloss: love is something like the wish that all being would flourish.
Watch out Honesty deployed to damage is not what the pairing describes.
- 3
Check the rule against what you teach
Peterson's argument that everyone already knows this: you never teach someone you love to lie, and you are always appalled if you have a son or daughter and they do not tell the truth. Compare the standard you enforce with the one you live by.
Pro tip The gap between the two is the exact size of the problem.
- 4
Read the conscience as an instrument
Use the 4am signal diagnostically. You do not wake in the morning berating yourself for telling the truth; you wake at four in the morning berating yourself for violating your conscience.
Pro tip Because it is specific, the signal usually points at a nameable incident — find it rather than treating the feeling as ambient anxiety.
Watch out It is really something that you cannot control your conscience, which is precisely why it is worth trusting as evidence.
- 5
Take the scale of responsibility seriously
Peterson cites Dostoevsky: everyone is responsible for everything that happens to them and everything that happens to everyone else as well. He calls it an insane statement made by a very extreme person, and also true — and thinks it is part of what people glimpse in a hallucinogen-induced religious experience.
Pro tip His compressed version: there is a lot more resting on you than you think.
- 6
Run the empirical test if unconvinced
For anyone who thinks the conscience is nothing, Peterson's instruction is direct: violate it for a while and see what happens. The claim is falsifiable by experience.
Pro tip His governing hope for Beyond Order is the same logic: if it is true it should do some good, because what is true does good.
Watch out The test is real. The cost of running it is the evidence it produces.
In the wild
When Peterson tried to unpack the first sentence of Genesis in the context of the broader biblical narrative, what appeared to be happening was a proposition that god is guided by love and uses truth to create — something like that. And maybe love, he adds, is something like the wish that all being would flourish. His verdict on the pairing is unqualified: there is not a better story than that.
→ A two-term operating rule — assume things are valuable and act on it, and do not say what you know to be untrue — derived from the text rather than asserted.
Peterson observes it is easy to be cynical about the hero's journey, and then says it is not that easy, because if you are cynical about it you undermine your own life — and everyone knows this. His evidence is universal and domestic: you never teach someone you love to lie, and you are always appalled if you have a son or daughter and they do not tell the truth. The knowledge that if you do not tell the truth the world falls apart is already in everyone, and it is actually true.
→ The rule is established as something people already act on with those they love, rather than as an external moral imposition.
Peterson notes you do not wake up in the morning berating yourself for telling the truth — you wake up at four in the morning berating yourself for violating your conscience. He observes that classically, in at least some strains of Christian thinking, conscience is associated with Christ or the Holy Spirit, the voice of god within, and says he is aware of all the criticisms of ideas like that. But the operational fact stands: it is really something that you cannot control your conscience, so what is it exactly? It is not you, you are responsible to it, it holds you accountable, it transcends you.
→ A concrete, checkable signal for detecting violations of the rule, plus the challenge to sceptics — violate it for a while and see what happens.
Common mistakes
Waiting until you are sure of the truth
The rule is negative for a reason. Requiring certainty before you speak converts an actionable constraint into an unreachable ideal, and in practice licenses saying the convenient thing while you wait.
Detaching truth from love
Peterson gives two requirements, not one — practise love, meaning assume things are valuable and act accordingly, and require truth. Truth-telling separated from the wish that all being would flourish becomes an instrument of harm rather than of creation.
Treating the 4am signal as generic anxiety
The conscience wakes you for violations, not for honesty. Medicating or ignoring the signal discards the one instrument you have for detecting where the rule has been broken.
Dismissing the conscience as nothing without testing it
Peterson's answer to the sceptic is empirical rather than argumentative: if you think it is nothing, violate it for a while and see what happens. Dismissing it in theory while never running the experiment is not scepticism.
Is it for you?
Best for
Anyone in a role with routine incentives to shade the truth — sales, management, writing, politics — who wants a rule they can actually apply in the moment.
Not ideal for
Situations where full disclosure causes concrete harm to a third party; the rule bars asserting known falsehood, not every act of discretion.
From the transcript
“it means to practice love and that means assume that things are valuable and act according to that assumption and it requires truth which is”
“don't say what you know to be untrue”
“you never teach someone you love to lie you're always appalled if you have a son or daughter you're always appalled if they don't tell…”
“it's not you you're responsible to it it holds you accountable it transcends you so what is it well if you think it's nothing well…”
From the episode
#502: Jordan Peterson on Rules for Life, Psychedelics, The Bible, and Much More