Fools despise wisdom and instruction.
All problems are people problems. And most people problems are people refusing to act like people.
For as he thinketh in his heart, so is he.
He who walks with the wise grows wise, but a companion of fools suffers harm.
A wise son makes a glad father, But a foolish son is the grief of his mother.
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.]