Although the each person's happiness is not equal. Is that we will choose what happiness. which is looking at the world in a positive is the key factor that allows us to live together with people in society have happily?
Although the joy of the people are not equal. Is that we are happy with it. It was the look on the positive side are the factors that will enable us to live with the people in society with happiness.
Even if the happiness of each are different. Whether we will choose what kind of happiness. That's positive attitudes is the important factor to make us can coexist with people in the society can be happy.