坚韧不拔的

Many of the most successful people are endowed with brains, talent, and perseverance.

许多获得巨大成功的人都有非凡的智慧、才能以及不拔的毅力。

He then ordered another god to come downtake the two high mountains away.

玉帝被愚不拔的精神所感动，便派大力神把两大山背走了。

In the novel, the old man was not only a representative for one person, it indicates a kind of strength, a sort of spirit, that's the respected grittiness, the never-give-up spirit.

在这里，老人不仅仅是代个人，而是代了股力量，种精神，那是让人敬佩的不拔，永不服输的精神。