Poet is celebrating happiness his happiness along with the song of the nightingale. Keats dreams of escaping sorrow and sadness that life presents him. The poet wants to escape all the unpleasant and sad things. He wishes that he could be free like a bird high and fly high without any limits, and human life presents all the gloomy things and sad. While thinking about the poem he writes various things that human experiences and bird doesn’t. The bird never sits like an old man.