Knowledge is of more value than gold
In the day of prosperity be joyful, but in the day of adversity consider.
Without vision a people perishes.
To gain riches is wise; to pay for riches with happiness is foolish.
Jealousy is cruel as the grave: the coals thereof are coals of fire, which hath a most vehement flame. [Therefore do not compare your lot with another's lest you see their advantages and lose the joy of what you already have.]
He that walketh with wise men shall be wise.