Consider the following statements about Bertrand Russell: 1? His grandfather was an important politician. 2? He opposed the 1914?18 war against Germany. 3? He worked for the postal service after the war. 4- He campaigned to improve prison conditions. 5? He became famous for a book on mathematical logic. 6? He wrote fiction in later life to support himself. Which of the statements above are TRUE, according to the text?