ح َتَّى الأحْمَقُ يُعتَبَرُ حَكِيماً إذا صَمَتَ، وَإذا أحكَمَ إغلاقَ فَمِهِ فَسَيَبدُو ذَكِيّاً.
Even a fool, when he is silent is counted wise, and he that shuts his lips is esteemed a man of understanding.