The efforts of youth are a good thing for a lifetime. For the fleeting time, don't relax your efforts at all.
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.
Don't be ashamed to learn from your subordinates.
Never get tired of studying.
Open-minded-very open/modest.
Have an insatiable desire to learn
Never too old to learn; Endless learning
diligently