Utopia is a perfect place. It is a place without war, hunger, poverty, or crime. It is a place where the people work together and share. There is no money in Utopia because the people do not need money. They do not have personal possessions because everything belongs to everyone. All of the people are equal in Utopia, and the laws are all fair. Utopia is not a new place. Plato, the ancient Greek philosopher, described a perfect society in his famous dialogue The Republic. In Plato's Republic, philosophers were the kings, and every person had a place in the society. In 1516, Sir Thomas More wrote about an island in the Pacific Ocean where everything was perfect. He named the island " Utopia". In 1602, Tommaso Campanella wrote The City in the Sun about a perfect community on the island of Ceylon ( now Sri Lanka ) ; and in 1872, Samuel Butler wrote a novel about a perfect country which he named " Erewhon". " Utopia" is a Greek word that means " not a place", and "Erewhon" is the English word " nowhere" spelled backwards. Utopia is a perfect place, but it is not a real place. Most 'real' Utopias last only a short time. This is because everyone wants to live in it, but no one knows how to make it work. As a result, when we say something is ' Utopia' today, we mean that it is a good idea, but it is not realistic. According to the passage, most 'real' Utopias last only a short time because _ . A) no one wants to be a leader B) no one knows how to make a perfect society C) it is difficult to collect money D) everyone wants to live in Utopia
A:
B