John Stuart Mill
John Stuart Mill was the most prominent liberal thinker of the 19th century. Mill underwent an intensive private education, in which he learned Greek at the age of three and Latin at the age of eight. From 1831 his friendship with the married Harriet Taylor was central to Mill's life; in 1849 after the death of her husband they married. Harriet Taylor died in 1858 in Avignon, but the nature of her influence on Mill's thought is interesting and complex.