Terms for subject General containing does not need to be

English	Russian
one does not need to be afraid of a barking dog, but he should be afraid of a silent dog	бойся не той собаки, которая лает, а той, которая молчит
one does not need to be afraid of a barking dog, but he should be afraid of a silent dog	в тихом омуте черти водятся
one does not need to be afraid of a barking dog, but he should be afraid of a silent dog	бойся молчаливой собаки и тихой заводи
she does not need to be told	ей нечего об этом говорить
she does not need to be told	она об этом сама уже знает