Four-Character Idiom · Conviction & Will · Kyojuro Rengoku
堅忍不抜
Meaning
To endure firmly and not be uprooted by any pressure — the Japanese articulation of what modern English calls resilience.
どんな困難にも耐え忍び、心を動かさないこと。レジリエンスの言語化。
The Kyojuro Rengoku line
Verbatim from the source article
「心を燃やせ歯を喰いしばって前を向け」
"KEEP YOUR HEART BURNING, GRIT YOUR TEETH AND MOVE FORWARD."
Why it fits Kyojuro Rengoku
Rengoku's teaching is not "be unbeatable" but "be unable to be uprooted." The full line names the weakness explicitly — being knocked down by one's own inadequacy — and then issues the imperative anyway: burn. That is kennin-fubatsu as a verb.
Sources
- デジタル大辞泉 — 堅忍不抜 (dictionary)
- 精選版 日本国語大辞典 — 堅忍不抜 (dictionary)