true endurance is enduring the unendurable
Proverb emphasizing that real patience means bearing what seems unbearable.
With the saying 'true endurance is enduring the unendurable' in his heart, he endured every hardship.
Common kana-mixed spelling for this proverb.
Kanji spelling using 成らぬ; less common but still encountered.
A traditional Japanese proverb; the exact origin is uncertain, but it reflects a common cultural value of perseverance.