Wie A zegt, moet ook B zeggen — literally "who says A, must also say B" — is one of the most quietly clever proverbs in Dutch. In seven words it builds a complete sentence around a free relative (wie), shows you how a verb-final subordinate clause forces inversion in the main clause that follows it, and slots in a modal of obligation (moeten) plus the little particle ook that carries the whole punch. It means roughly in for a penny, in for a pound — once you take the first step, you are committed to the next one. This page takes it apart piece by piece, lines it up against its English cousins, and shows you the two errors English speakers reliably make with it.
The proverb
Wie A zegt, moet ook B zeggen.
Literally: "Who says A, must also say B." Idiomatically: once you've committed to the first step, you have to take the next one too; you can't start a thing and then refuse to finish it.
The closest English equivalents are "in for a penny, in for a pound" and "you can't have it both ways", with a flavour of "if you've said A, you must say B" (the phrase exists in English too, borrowed from the same Continental tradition). The image is the alphabet: if you've already pronounced the A, logic drags you on to the B.
Wie A zegt, moet ook B zeggen.
If you say A, you must also say B (= once you've started, you have to follow through).
What's happening grammatically
The free relative wie = "whoever / the one who"
The whole subject of the sentence is the clause wie A zegt — "whoever says A." Here wie is not the question word "who?" and it is not a relative pronoun attached to a preceding noun. It is a free relative: a relative pronoun that contains its own antecedent. Wie all by itself means "the person who / whoever / anyone who." You could paraphrase the proverb as Degene die A zegt, moet ook B zeggen ("the one who says A...") — the bare wie simply rolls "the one" and "who" into a single word.
Wie het laatst lacht, lacht het best.
He who laughs last, laughs best. ('Wie' = whoever, a free relative standing on its own as the subject.)
Wie niet sterk is, moet slim zijn.
Whoever isn't strong has to be clever. (Same frame: 'wie' opens a free relative that is the subject of 'moet'.)
English does have free relatives — whoever, what, whichever — so the concept isn't foreign. What trips learners up is that Dutch reuses the form wie, which they already know as the question word "who?". In a statement at the front of a sentence, wie is almost always the free relative, not a question.
A verb-final relative clause feeding inversion
Look at the word order inside the free relative: wie A zegt — the finite verb zegt sits at the end. That is the normal rule for subordinate clauses in Dutch: the conjugated verb goes last. The whole clause wie A zegt then occupies the first position of the main sentence — it is one big constituent, the subject.
Because something other than the main verb fills first position, Dutch verb-second (V2) order kicks in: the finite verb of the main clause must come immediately next, in second position, before its subject would otherwise sit. That finite verb is the modal moet. So the comma is followed straight away by moet:
[ Wie A zegt ]₁ , [ moet ]₂ ook B zeggen.
Wie A zegt, moet ook B zeggen.
Whoever says A must also say B. The whole clause 'wie A zegt' is first position; 'moet' is the V2 verb that follows the comma.
Wie veel reist, leert veel.
Whoever travels a lot learns a lot. ('leert' is the V2 verb right after the free-relative subject — the comma is optional in short cases.)
This "subordinate clause first, then inverted main verb" pattern is the single most important structural feature of the proverb. English does the same thing intonationally (He who says A — must also say B) but without the strict verb-second jump, so learners often forget to put moet right after the comma.
moet — the modal of obligation
Moet is the third-person singular of moeten ("must / to have to"). It supplies the obligation: saying A obliges you to say B. As a modal, it pairs with a bare infinitive at the end of the clause — here zeggen — producing the verb bracket moet ... zeggen that wraps around ook B.
Wie zich brandt, moet op de blaren zitten.
Whoever burns himself must sit on the blisters (= you must bear the consequences of your own actions). 'moet ... zitten' is the modal bracket.
ook — "also/too", and why it's essential
The particle ook ("also, too") is doing real semantic work. It links the second action to the first: if you say A, then you must say B *too. Drop *ook and the sentence still parses, but it loses the sense of "in addition to what you already did" — the very point of the proverb. Ook sits inside the verb bracket, in the middle field, after the verb moet and before the new information B zeggen.
Je hebt het beloofd, dus nu moet je het ook doen.
You promised it, so now you have to actually do it too. (everyday echo of the same logic: 'ook' ties the obligation back to the earlier commitment)
How it's used
Dutch speakers reach for Wie A zegt, moet ook B zeggen to tell someone — often half-scolding, half-resigned — that they've committed themselves and can't back out now. It's the line you use when a person started a project, signed up for a duty, or made the first concession, and is now reluctant to take the inevitable next step.
Je hebt de verbouwing zelf voorgesteld, dus nu betaal je ook mee. Wie A zegt, moet ook B zeggen.
You proposed the renovation yourself, so now you chip in for it too. In for a penny, in for a pound. (classic trailing use)
We zijn nu eenmaal begonnen — wie A zegt, moet ook B zeggen.
Well, we've started now — once you've said A, you have to say B.
The register is neutral: at home in everyday conversation, in newspaper columns, and in workplace discussions alike. It's slightly proverbial in tone, so you wouldn't pad it out — you drop it in whole, as a fixed unit.
Vocabulary and cultural note
The A and B are pronounced as the Dutch letter names (aa, bee) — the saying treats the alphabet as the model of an unstoppable sequence. The same "free relative wie + general truth" frame powers a whole family of Dutch proverbs: Wie het laatst lacht, lacht het best ("he who laughs last, laughs best"), Wie niet waagt, die niet wint ("nothing ventured, nothing gained" — note the resumptive die), and Wie goed doet, goed ontmoet ("do good and you'll meet good"). Collecting these is one of the fastest ways to internalise the free-relative wie, because the structure repeats identically each time: a wie-clause as subject, then a general-truth main clause.
Common Mistakes
❌ Wie zegt A, moet ook B zeggen.
Incorrect — inside the free relative the finite verb 'zegt' must go to the END: 'Wie A zegt'. 'Wie zegt A' uses main-clause order in a subordinate clause.
✅ Wie A zegt, moet ook B zeggen.
Whoever says A must also say B.
❌ Wie A zegt, ook moet B zeggen.
Incorrect word order — after the clause-subject in first position, the V2 finite verb 'moet' must come immediately after the comma, before 'ook'.
✅ Wie A zegt, moet ook B zeggen.
Whoever says A must also say B.
❌ Who says A, must also say B? (reading 'wie' as the question 'who?')
Incorrect reading — there's no question here. 'Wie' is a free relative: 'whoever / the one who'. The sentence is a statement, not a question.
✅ Wie A zegt, moet ook B zeggen. = 'Whoever says A must also say B.'
Once you've committed to the first step, you must take the next.
❌ Wie A zegt, moet B zeggen.
Weakened — dropping 'ook' loses the 'in addition' logic that is the whole point. The proverb needs 'ook'.
✅ Wie A zegt, moet ook B zeggen.
Whoever says A must ALSO say B.
❌ Diegene wie A zegt, moet ook B zeggen.
Incorrect — you cannot prop 'wie' up with an antecedent like this. Either bare 'wie A zegt' (free relative) or 'Degene die A zegt' (antecedent + 'die'), never 'diegene wie'.
✅ Wie A zegt, moet ook B zeggen.
Whoever says A must also say B.
Key Takeaways
- Wie here is a free relative — "whoever / the one who" — containing its own antecedent; it is not the question "who?" and not a relative pronoun hanging off a noun.
- Inside the free relative the finite verb goes last: wie A zegt.
- The whole clause wie A zegt fills first position, so V2 forces the modal moet to come immediately after the comma, before its subject would.
- Moet (from moeten) supplies the obligation and brackets with the final infinitive zeggen.
- Ook is essential: it ties the second step to the first — "you must say B too." Drop it and you lose the meaning.
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