속담: 시작이 반이다

Of all Korean proverbs, 시작이 반이다 is the easiest to take apart — four words, no missing pieces, no tricky verb. It says the beginning is half (English's "well begun is half done"): once you have started, you are already halfway there. Because it hides nothing, it is the perfect first proverb for seeing how a 속담 is built: a noun marked with the subject particle 이, and the bare plain copula 이다 that predicates without any politeness ending. Master this one and you understand the grammar under a hundred others.

The register is condensed aphoristic 한다체 — the plain written style of proverbs. Sayings strip away every politeness ending and stand in bare 한다체, which is exactly why 이다 here is the plain copula, the listener-less equivalent of 입니다. That timelessness — no speaker, no listener, no moment — is what makes a proverb sound like a permanent truth rather than something a particular person said. Let us look at the saying, then take it apart.

The proverb

Read it as a bare equation: 시작 = 반. "The beginning" is "half." There is no event here, nothing happening — just an identity being stated once and for all. That flat, definitional quality is the whole point: the proverb declares a truth, it does not narrate.

Now the two grammar pieces.

• 시작이 — the subject particle 이. 시작 ("beginning/start") ends in a consonant (the ㄱ batchim), so the subject particle is 이, not 가 (가 follows a vowel). The reading liaises: 시작 + 이 → sijagi. The particle 이 marks 시작 as the thing being defined — it picks out "the beginning" as the subject of the equation. (See subject 이/가.)
• 반이다 — the plain copula 이다. 반 is "half" (a plain noun), and 이다 is the copula "to be [X]," attaching straight to the noun. This is the plain form — not the polite 반이에요, not the formal 반입니다 — because proverbs live in listener-less 한다체. 이다 alone does all the predicating; there is no separate verb "to be." (See the plain written copula.)

Here is the same saying dressed in the two spoken registers, so you can feel what the plain 이다 leaves off:

Same equation, three registers: plain 이다 (the proverb), formal 입니다, polite 이에요. The bare 이다 is not "wrong" or "incomplete" — it is the deliberately impersonal form a saying takes. When you quote the proverb, you will keep the plain stem (as the next section shows); when you apply its idea in your own polite speech, you would use 이에요/입니다.

Why 이, not 은

It matters that the proverb says 시작이, not 시작은. The subject particle 이/가 presents 시작 as the specific thing being equated with 반 — a crisp, focused "the beginning is half." Swap in the topic particle 은/는 and you get 시작은 반이다, which frames it as "as for beginnings, [they are] half" — a looser generalization that dilutes the punchy, equation-like snap the saying depends on. Proverbs favor the sharp 이/가 equation.

This different saying-like sentence shows 은 doing its natural job — setting up 시작 as a topic for a broad comment ("beginnings, in general, are hard"). Notice how 은 makes it a musing about a category, while the proverb's 이 makes a pointed identity claim. That contrast is the difference between 시작은 어렵다 and 시작이 반이다. (More at topic vs subject.)

Using it in real life

You rarely say the bare proverb by itself. You tag it onto your own sentence with a quotative frame — most often -(이)라고 하다 ("they say that…" / "as the saying goes"). Since the proverb ends in the copula, the quoted form is 반이라고 — the plain copula 이다 turning into its quotative shape -(이)라고.

반이라고 하잖아 = 반이다 → quoted 반이라고 + 하다 ("say") + -잖아 ("as you know"). The -잖아 leans on the fact that this proverb is common knowledge — "as they say, right?" This is the single most natural way the saying enters conversation: not stated flatly, but invoked as received wisdom. (On the quotative -(이)라고, see -(이)라고 하다.)

The natural follow-up: 일단 ("first of all, just") + 시작하다 + the trial ending -아/어 보다 ("try doing") in the intimate imperative 봐. Together with the proverb, this is the classic pep-talk shape — quote the saying, then push the person to begin: "well begun is half done, so just start."

The other common frame: -(으)니까 ("since/because") wrapping the frozen proverb into a reason. 반이니까 = 반이다 + -니까 ("since [it] is half"). Then -부터 ("from") on 오늘 ("from today") and the propositive -자 ("let's") give the resolution. This is how the saying motivates action: since the start is half the battle, let's take that start now. (See -(으)니까.)

The proverb embedded inside polite speech. The saying stays frozen in its plain quotative form — 반이라고 — but the surrounding sentence is 해요체 (했어요). This is the key move: the quotation keeps the plain copula, while your own frame carries whatever politeness the situation needs. 등록부터 했어요 = "started with registering," 우선 ("first"), from the humble-practical register of everyday polite talk.

The proverb fits any moment of hesitation before a big task — starting a diet, a language, a project, a workout. You deploy it to reassure someone (or yourself) that the hardest, most valuable step is simply beginning: once you've started, half the work is behind you.

What to notice

• 이, not 은. The subject particle 이 (시작이) makes a sharp identity claim; the topic 은 would soften it into a generalization. Proverbs favor the 이/가 equation.
• 이 follows a batchim. 시작 ends in a consonant, so it takes 이 (not 가); the reading liaises to sijagi.
• Plain 이다 is the register. The bare copula (not 이에요/입니다) marks this as a timeless, listener-less saying. There is no verb "to be done" — 이다 alone predicates an equation.
• You quote it whole with a frame. -(이)라고 하다 ("they say…") or -(으)니까 ("since…") attach to the frozen 반이라고 / 반이니까; the copula's plain quotative stem survives even inside polite speech.

Common Mistakes

1. Swapping 이 for the topic 은. The proverb makes a pointed equation with the subject particle 이; 시작은 turns it into a loose generalization and loses the aphoristic snap.

2. Adding a verb because English has 'done.' English "half done" tempts learners to insert 되다/하다; but the copula 이다 alone predicates the equation — nothing "happens."

3. Quoting with 이에요/입니다 instead of the plain quotative 이라고. When you embed the proverb with -(이)라고 하다, the copula appears as its plain quotative stem 이라고 — not the polite 이에요라고.

4. Using the wrong subject-particle allomorph. 시작 ends in a batchim, so it takes 이, never 가 (가 goes after a vowel).