What is happiness?

Hi everybody! Do you know what is happiness?
Come and discuss about what is happiness.
It seems that everybody knows what is happiness,but is having different views about happiness.is the happiness,the pleasures of life?
Most people often think :NO MONEY,NO HAPPY.
MONEY,in this world,is all-powerful.It seems that everything depends on MONEY.It seems that everybody needs MONEY to be HAPPY.But everybody needs not just have money,because everybody could have money,everybody desire to be rich or to become millionaire.With a lot of money,most people believe life could be enjoyed fully.Most people even learned that the goal of life is all the pleasures!
Plato,a great Greek philosopher,argued that all people desire happiness.But the problem is how to make happiness.So it is about the knowledge of the happiness.
Can we be (really) happy without knowing what is the happiness?
According to Plato,happiness is the natural consequence of a healthy soul.He further claimed that because moral virtue makes up the health of the soul ,all people should desire to be virtuous.People sometimes do not seek to be virtuous,but only because they don`t realize that virtue produces happiness.
So what is the happiness?
For Our Lord Buddha,the happiness is the pre-end of desires,the pre-end of craving for life.Our Lord Buddha claimed that « When heart has fewer desires,we have happiness.When desires end,we have peace.»
For Socrates,the gratest Greek philosopher,the happiness is simply the question of justice.It`s not the question of power nor of pleasures.Anyone who did not commit injustice,is happy.Our objective of life is « not to commit injustice».
It does not suffice to wish:It is to know.To learn to be just is to be not unjust.That`s a simple learning,the pratical learning to know about the justice and the injustice,in order to be just.