What other idioms or poems show that learning is endless?

There is a road in the mountain of books, but there is no limit to learning the sea. The ancients learned nothing, and the young were not old.

The efforts of youth are a good thing for a lifetime. Don't relax your efforts for the fleeting time.

A lazy youth, a lousy age.

Just as celestial bodies maintain vitality through movement, a gentleman should constantly pursue self-improvement.

Diligence is good at diligence, but not good at playing.

Elbow oil has the best polishing effect.