expression
true endurance is enduring the unendurable
Proverb emphasizing that real patience means bearing what seems unbearable.
「ならぬ堪忍するが堪忍」という言葉を胸に、彼はどんな困難にも耐えた。
With the saying 'true endurance is enduring the unendurable' in his heart, he endured every hardship.
Means patience or forbearance; the proverb uses it to contrast ordinary patience with the deeper endurance of the unbearable.
A traditional Japanese proverb; the exact origin is uncertain, but it reflects a common cultural value of perseverance.