John Keats, born on October 31, 1795, in London, England, is one of the most venerated figures in English Romantic poetry. His literary career was remarkably short, spanning just over half a decade, but profoundly influential in the years to come. Renowned for his vivid imagery and emotional intensity, Keats's work embodies the Romantic movement's themes, including the value of emotion over reason and nature's beauty and power. Keats's well-known 'Sonnets' are a testament to his lyrical brilliance and his mastery over the strict constraints of sonnet structure. While his entire collection of poetry is not extensive, his other notable works, such as 'Ode to a Nightingale,' 'Ode on a Grecian Urn,' and 'To Autumn,' are considered to be among the finest in the English language. Unappreciated in his own time, Keats's posthumous fame has grown, and he is now revered for his contributions to the romantic genre and his exploration of beauty and the nature of artistic expression. Tragically, his life was cut short when he died at the age of 25 on February 23, 1821, in Rome, but not before leaving an indelible mark on the world of poetry.