Not by age but by capacity is wisdom acquired.
Patience is the best remedy for every trouble.
No man is wise enough by himself.
It is wisdom to think upon anything before we execute it.
He gains wisdom in a happy way, who gains it by another's experience. [Lat., Feliciter sapit qui alieno periculo sapit.]
Wisdom is not attained by years, but by ability
He is happy in his wisdom who has learned at another's expense.