一寸の虫にも五分の魂
issun no mushi ni mo gobu no tamashii
Small doesn’t mean weak. Japanese children cheer each other on with issun no mushi ni mo gobu no tamashii (一寸の虫にも五分の魂).
I’m Arasen, an elementary school principal and calligrapher in Japan. As a teacher, this proverb has guided how I treat every child.
Quick Facts
| Japanese | 一寸の虫にも五分の魂 |
|---|---|
| Reading | いっすんのむしにもごぶのたましい |
| Romaji | issun no mushi ni mo gobu no tamashii |
| Literally | Even a one-sun bug has a five-bu soul |
| Meaning | Even small, weak beings have their own spirit. |
| Units | 1 sun ≈ 3 cm; 5 bu = half a sun |
| English cousin | Even a worm will turn. |
What Does It Mean?
However small or weak, every living thing has its own pride and feelings – so never look down on anyone.
Word by Word
| 一寸 | issun – one sun (about 3 cm), an old unit |
|---|---|
| の虫にも | no mushi ni mo – even a bug of |
| 五分 | gobu – five bu, half a sun |
| の魂 | no tamashii – a soul, a spirit |
Where Does It Come From?
Even a tiny bug about 3 cm long has a soul half the size of its body.
A Word from Arasen
Don’t look down on someone just because they’re small or look weak.
Even small ones have pride. They have real feelings.
When you were little, adults probably went easy on you – but at some point, didn’t that start to make you angry?
When you can finally compete on equal terms, you think, “Don’t underestimate me!”
Issun is a unit of length, about 3 cm, and gobu is half of that.
So the proverb says even a little bug has a soul – willpower and grit – half the size of its body.
It’s a proverb that cheers on the small.
As a teacher, I have always tried to treat even small children as full human beings, probably because of a teacher I admired. Whether I taught first graders or sixth graders, I treated them the same way. I never treated them “like children.”
(Translated from Arasen’s original Japanese.)
How to Use It
A Short Skit
Yusuke, you’re going to do judo with that huge guy? Are you OK?
勇輔くん、あんなに体が大きい人と柔道をするの？大丈夫？Tomoko, I may be small, but I’m full of fight. Issun no mushi ni mo gobu no tamashii! I’ll do my best!
智子ちゃん、小さくたって、やる気は十分や。一寸の虫にも五分の魂やで。頑張るで！！“Chan-chan” is the little “ta-da!” sound that closes a comedy skit in Japan.
Example Sentences
- My quiet little brother finally talked back to a bully. Issun no mushi ni mo gobu no tamashii.
いつもおとなしい弟が、いじわるされて言い返した。一寸の虫にも五分の魂だ。 - They say issun no mushi ni mo gobu no tamashii, so don’t make light of little kids’ feelings.
一寸の虫にも五分の魂というから、小さい子の気持ちもばかにしてはいけない。
Similar Sayings in English
- Even a worm will turn.
- Don’t judge a book by its cover.
Germany: “Even a worm writhes when stepped on.” Mongolia: “Small as it is, an ant can wear down a mountain.”
Quick Quiz
About how long is one sun (一寸)?
- A. About 3 cm
- B. About 30 cm
- C. About 1 meter
Show the answer
The answer is A. About 3 cm – the same sun as in the folk tale hero Issun-bōshi, the one-inch boy.
Watch the Lesson (in Japanese)
On my YouTube channel “Kyō kara tsukaeru kotowaza kōza” (Proverbs You Can Use from Today), I explain proverbs with short comedy skits. It’s in Japanese – a fun challenge for learners!
Free Worksheet for Teachers
Teaching Japanese? Download a free printable worksheet for this proverb – with the skit, a fill-in-the-blank, a quiz and a writing task (10 proverbs, A4, with answer key).
