Charles Dickens's works are especially associated with London, which is the setting for many of his novels. These works do not just use London as a backdrop but are about the city and its character. Dickens described London as a magic lantern, a popular entertainment of the Victorian era, which projected images from slides. Of all Dickens's characters, "none played as important a role in his work as that of London itself"; it fired his imagination and made him write. In a letter to John Forster in 1846, Dickens wrote "a day in London sets me up and starts me", but outside of the city, "the toil and labour of writing, day after day, without that magic lantern is IMMENSE!!"