Some "uniquely Japanese" proverbs turn out to have crossed the ocean to get there.
Twelve sayings, their English counterparts, and the stories behind them.
"Japanese" Proverbs That Actually Came from Abroad
豚に真珠 — buta ni shinju
Giving something valuable to someone who can't appreciate it
Origin
Literally "pearls to a pig." It comes directly from the Bible — Matthew 7:6, where Jesus says not to give what is holy to dogs or throw pearls before swine. In the culture the Gospels were written in, pigs were considered unclean and pearls were among the most precious things imaginable, making the contrast especially vivid. The phrase was translated into Japanese essentially word for word.
In English
Pearls before swine — the Japanese and English versions share the exact same source.
一石二鳥 — isseki nichō
Getting two benefits from a single action
Origin
Written with kanji, this four-character phrase looks like it should come from a Chinese classic — but it doesn't. It's a direct translation of the 17th-century English proverb "kill two birds with one stone," imported into Japanese in the modern era.
In English
Kill two birds with one stone
郷に入っては郷に従え — gō ni itte wa gō ni shitagae
Follow the customs of wherever you find yourself
Origin
This one traces back to a story about St. Ambrose, the 4th-century bishop of Milan, advising Augustine — who was used to Rome's customs — to follow local practice while staying in Milan. In other words, the Japanese and English versions aren't parallel developments; they come from the very same Western anecdote. (A similar phrase also appears in the Chinese classic Zhuangzi, so a Chinese-origin theory exists too.)
In English
When in Rome, do as the Romans do
火のない所に煙は立たぬ — hi no nai tokoro ni kemuri wa tatanu
Rumors don't start without some basis in fact
Origin
Translated from the English "There is no smoke without fire" in the late 1800s. An 1889 collection rendered it as "where there is smoke, there is fire"; by a 1908 proverb dictionary, it had settled into close to its current form. Despite feeling like age-old folk wisdom, it's a Meiji-era import.
In English
There's no smoke without fire
溺れる者は藁をも掴む — oboreru mono wa wara wo mo tsukamu
A desperate person will grasp at anything, even something useless
Origin
Traced to the English expression "a drowning man will catch at a straw," which dates back to Thomas More's writing in 1528. It was introduced to Japan in the Meiji period and didn't catch on immediately, but became established through repeated use in 1890s newspaper serials. Ocean bathing had recently become a popular pastime in Japan too, which likely made the image easier to picture.
In English
A drowning man will catch at a straw
Born in Japan or China, But English Has a Close Match
井の中の蛙、大海を知らず — i no naka no kawazu, taikai wo shirazu
Someone whose narrow experience blinds them to the wider world
Origin
From the Chinese classic Zhuangzi, chapter "Autumn Floods": a frog in a well cannot be told about the sea, because it is confined by its space. After reaching Japan, a second half was often added — "yet it knows the depth of the sky" — turning the frog's narrowness into a kind of depth of its own.
In English
A frog in a well knows nothing of the great ocean — English-speaking cultures use almost the same image.
塞翁が馬 — saiō ga uma
Fortune and misfortune are unpredictable and often trade places
Origin
From the Chinese text Huainanzi. An old man near the border loses his horse — bad luck — but it returns bringing a fine horse with it — good luck. His son then breaks a leg riding that horse — bad luck — which later keeps him out of a war that kills most other young men — good luck again. The story keeps flipping to make its point: you can't judge an event as good or bad in isolation.
In English
Every cloud has a silver lining / A blessing in disguise
良薬は口に苦し — ryōyaku wa kuchi ni nigashi
Good advice is often hard to hear, just like good medicine tastes bitter
Origin
Found in similar form in two Chinese classics, the Kongzi Jiayu and the Han Feizi: "good medicine is bitter to the mouth but benefits the illness; sincere advice offends the ear but benefits one's conduct."
In English
A bitter pill to swallow
猿も木から落ちる — saru mo ki kara ochiru
Even an expert makes mistakes sometimes
Origin
Literally "even monkeys fall from trees." Traced to the Chinese classic Huainanzi, it spread widely among ordinary people in the Edo period after being included in a popular set of karuta playing cards used to teach proverbs to children.
In English
Even Homer nods / A good marksman may miss
蓼食う虫も好き好き — tade kuu mushi mo sukizuki
Tastes vary from person to person
Origin
Literally "even insects that eat smartweed do it out of preference." Tade (smartweed) is a genuinely bitter, pungent plant, yet certain insects seek it out anyway — a real biological observation turned into a homegrown Japanese proverb, with no foreign source behind it.
In English
There's no accounting for taste / Beauty is in the eye of the beholder
転ばぬ先の杖 — korobanu saki no tsue
Prepare before trouble happens, not after
Origin
Literally "a cane before you fall." No specific literary source has been identified — it's simply old, practical folk wisdom.
In English
Prevention is better than cure / An ounce of prevention is worth a pound of cure
Proverbs Travel Further Than You'd Think
What looks like a "uniquely Japanese" turn of phrase often turns out to have crossed an ocean or a few centuries to get there. Tracing a proverb's origin tells you something about the history of the people who kept using it long enough for it to survive.
💡 Ayatoki's Food, Animals, Geography, and Plants genres show a short trivia fact every time you solve a word — a small daily habit that adds up to a lot of interesting vocabulary over time.