What Should John Keats Want To Say In His Poem "A Thing Of Beauty"?

This poem speaks about beautiful  things  and how they play an important role in our lives.
According to the poet, a thing of beauty provides endless joy and its loveliness keeps increasing. Its beauty can never cease. It acts as a shady place for us, under which we can sleep and have sweet dreams. It is like a flowery band that binds us to the earth.
Today, everyone’s life is filled with sadness and misery. It is these things of beauty that steal us away from our gloomy lives and give us a few moments of wonder and joy.
Some of the beautiful things that the poet mentions are the sun, moon, young as well as old trees, which provide shade to sheep, daffodils, pure streams and musk-roses blooming in forests. The poet also finds beauty in the imaginary stories people have made about death and lovely stories that he has heard. According to the poet, things of beauty are like an endless fountain pouring on us from the heavens, which signifies that God himself has made these beautiful things so that we may have happiness, calm and peace in our lives.

"A Thing of Beauty is Joy for Ever" by Keats is actually an introductory extract from his long poem "Endymoin" which runs into five books, written in 1878.

Compton Rickets says "Keats had no religion save the religion of beauty". It is true that Keats is not primarily a moral poet. He is the poet of beauty. He himself says,
"I have loved the principle of beauty in all things."

He was a romantic poet. But his poetry differs to a great extent from that of Wordsworth, Coleridge, Shelly and Byron. Their poetry spoke of man, his destiny, his wrongs, his rights and his hopes. But Keats has no interest in man and in the future of mankind. He has no interest in any thing but beauty. Keats' concept of beauty first appeared in detail in his poem "Endymion". This poem is a revolt against the commonplace reality. According to Keats the object of beauty differs from an ordinary object. The ordinary object appeals us only temporarily. Its effect is short lived and its loveliness decreases with the passage of time. But the object of beauty appeals to our senses permanently. It cannot be destroyed by time and space. It is a temporal and its loveliness does not fade.

Keats further associates the object of beauty with a cluster of flowers and a group of shady trees. One can relax in these surroundings.

"and a sleep full of sweet dreams and health, and quiet breathing."
These lines show the sweetness and calmness which man gets from the companionship of the objects of beauty. It is a ray of light and hope that consoles man in his miseries and misfortunes. Then Keats mentions the objects of beauty one by one. The sun, the moon, the old trees, the daffodils, the clear streams and the forest which is rich with beautiful flowers-all these objects of beauty are a source of consolation in a world
"Where men sit and hear each other groan".