From the Gulistan To the ignorant man nothing is better than silence,
And were he aware of this he would no longer be ignorant.
When you are not possessed of perfection or excellence,
It is better that you keep your tongue within your mouth.
The tongue bringeth disgrace upon men.
The nut without a kernel is light in weight.
The beast will not learn of thee how to speak;
Learn thou of the beast how to be silent.
Whoever reflecteth not before he answereth,
Will probably utter inappropriate words.
Either adorn thy speech with the intelligence of a man,
Or sit in silence like a dumb animal.
- Saadi