Still waters run deep
A quiet person often has a great deal of feeling or knowledge beneath the surface.
English
Still waters run deep
Tiếng Việt
Tâm ngẩm tầm ngầm mà đấm chết voi.
Người ít nói thường có chiều sâu ít ai ngờ.
Examples
- He said almost nothing all evening, but still waters run deep.
- Don't mistake her silence for indifference — still waters run deep.