In 1830 he joined the controversy that had arisen around the issue of Catholic Emancipation by writing his last prose work, On the Constitution of the Church and State. The third edition of Coleridge's Poetical Works appeared in time for him to see it before his final illness and death in 1834.

Coleridge died in Highgate, London on 25 July 1834 as a result of heart failure compounded by an unknown lung disorder, possibly linked to his use of opium. Coleridge had spent 18 years under the roof of the Gillman family, who built an addition onto their home to accommodate the poet.

Mary Shelley was Friends with other Famous Writers These included Samuel Taylor Coleridge and William Wordsworth both of whom often visited her family home, and Lord Byron, John William Polidor, and John Keats. The world that Mary grew up in and embraced as a young adult was a rapidly changing one.

It argues that Coleridge was immensely influenced by and distinguished himself from German philosophers like Immanuel Kant, Johann Gottlieb Fichte, Friedrich Wilhelm Joseph Schelling, Karl Wilhelm Schlegel, Friedrich Leopold, Freiherr von Hardenburg (Novalis) and Georg Wilhelm Friedrich Hegel.