Very passionate
With a little decadent.
This is how I understand this poem.
Poetry can give people a free space, because what can't be said at ordinary times and what can't be said casually can be expressed in poetry. Isn't that what he is?
Silence means thinking. He himself lived in the early stage of reform and opening up, and new things and new ideas made people fidget. Isn't it a good idea to stop people from being impetuous, silent and thinking quietly in a noisy city?
therefore
Haizi said: "Poetry is something that returns freedom and silence to mankind."
That's how I understood it when I saw it.
Not necessarily right
Just expressing my personal opinion.