S.T. Coleridge (1772–1834) was an English poet, literary critic and philosopher who was a founder of the Romantic movement and a member of the Lake Poets with his friend William Wordsworth. His critical works were highly influential, especially his 'Biographia Literaria' (1817). It is a critical autobiography that unites philosophy with literary criticism in order to define the true nature of poetry, genius, and the creative imagination. Moreover, it is a critical response to the poetic theories of William Wordsworth. According to Arthur Symons, Coleridge's 'Biographia Literaria' is "The greatest book of criticism in English".