Other important figures in Elizabethan theatre include Christopher Marlowe (1564–1593), Thomas Dekker (c. 1572 – 1632), John Fletcher (1579–1625) and Francis Beaumont (1584–1616). Marlowe's subject matter is different from Shakespeare's as it focuses more on the moral drama of the renaissance man than any other thing. His play Doctor Faustus (c. 1592), is about a scientist and magician who sells his soul to the Devil. Beaumont and Fletcher are less-known, but they may have helped Shakespeare write some of his best dramas, and were popular at the time. Beaumont's comedy, The Knight of the Burning Pestle (1607), satirises the rising middle class and especially the nouveaux riches .