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Now with the development of the society .Happiness is becoming more and more important.The students have different view about the happiness.Some of the students think money lead to happiness because they can buy and do everything if they have enough money.Some of the students think health result in happiness some of students think wealth bring happiness because they can bring their partents to travel all over the world and have spare time.However I think knowledge is the most important thing because knowledge is power and you will do much for mankind.Different people have different views onhappiness .What do you think?