This third volume covers the period from Coleridge's first lectures on poetry, at the Royal Institution, and the inception of The Friend, to his last lecture in 1819. It is, therefore, the period of his various courses of lectures on Shakespeare and other literary subjects, and on philosophy, of the Biographia Literaria, and the Lay Sermons. During this time, Coleridge's close friendship with Wordsworth deteriorated, ending in an estranging quarrel. His drug addiction was deepest during these years of his life, until he finally found haven in Dr. Gillman's house at Highgate.