We have to share the earth because we are a part of the earth. We are not able to buy the earth with money. We should reconsider the environment. Finally, students have to find what do they really want to do. That is to say, they should be greatly satisfied and lead a worthwhile life.
People have to earn money to live.
It is necessary for parents to earn money to bring up their children. But a lot of money sometimes make people crazy. If people get a lot of money, they try not to work. As a result of that, people may lose their confidence and breakdown their family communication. We have to remember that money is a tool to buy necessities for life.