Good night to you dear friend ☺️, the reason why night is silent is because everything have stopped moving and activities have ceased, also every one is on their bed sleeping or resting....I think that's why the night is always silent.

I think the reason behind that silence has power. Cant you see a lots of poet admire the moonlit night. May be the Moon has a philosophy that I am beautiful. Why should I shout on my voice. May be she is optimistic that her beauty will sooth peoples mind and they will sing song on her, recite poems describing her silence and thus she hopes she will have words. In a nutshell night wants to have words by silence.

There creator has created the night for our resting period. ..we people don't talk while sleeping or taking rest....so it's silent in night♥️

The night is a blessing of God, it's for us to take rest and get ready for the next day. Have you ever seen stars shining in the sky and slept watching those? That's an amazing scene. Good night dear.