children Thành ngữ, tục ngữ
children and fools speak the truth|child|children|
Children and fools say things without thinking; they say what they think or know when grown-ups might not think it was polite or wise to do so.

A proverb.
"Uncle Willie is too fat," said little Agnes. "Children and fools speak the truth," said her father.
children should be seen and not heard|child|childr
A command issued by adults to children ordering them to be quiet and not to interrupt.

A proverb.
Your children should not argue so loudly. Haven't you taught them that children should be seen and not heard?