The Kaleidoscopic Mind of Peter Mark Roget

PETER MARK ROGET died on 12 September 1869, Nevertheless, he is more widely known today than he ever was in his heyday. His name has endured a full century, and may indeed endure for ever, primarily because of the great popularity, extraordinary sale, and unforgettable title of his Thesaurus of English Words and Phrases. This astonishing collection of interchangeable parts of speech, ‘classified and arranged … so as to facilitate the expression of ideas and assist in literary composition’, was first published in 1852, long after Roget had retired from medical practice and shortly after he had given up his post as secretary of the Royal Society. He was already 73 years old, but since he could not slacken his habitual pace, he continued to work unceasingly on revision after revision until there were twenty‐eight revisions when he died seventeen years later. After his death, his son, John Lewis Roget, edited the Thesaurus until 1908; a grandson, Samuel Romilly Roget, then took over the editorship and retained control over the legacy until 1936.