What are the theme of this poem

The main themes of John Keats' "Ode to a Nightingale" are:

• Escape from Human Suffering and Mortality: The speaker yearns to leave behind the pain, sickness, old age, and despair of the human world, seeking oblivion from its harsh realities.
• The Power of Nature and Art (Poetry): The nightingale's timeless song and the natural world it inhabits represent an ideal realm of beauty and joy, offering a temporary escape from human woes. Poetry ("viewless wings of Poesy") is also presented as a means to transcend reality.
• The Contrast Between the Ideal and the Real: The poem highlights the stark difference between the immortal, blissful world of the nightingale's song and the fleeting, sorrowful existence of humanity.
• Beauty and Impermanence: It explores how human beauty and love are transient and subject to decay, unlike the seemingly eternal beauty of the nightingale's song.