Sir Winston S. Churchill (1874-1965) was Prime Minister of the United Kingdom on two occasions, from 1940-1945 and again from 1951 to 1955. Celebrated as one of the greatest leaders of the twentieth century, he was also a gifted orator, statesman and historian. The author of more than forty books, he was awarded the Nobel Prize for Literature in 1953 and in 1963 was made an honorary citizen of the United States.