There is an I in "happiness",There is no Y in "happiness",It's an I.
幸福的幸里面是一个“幸”,不是一个“辛”。  或者理解成,Y=Why=为什么,I=我。幸福里面没有为什么,只有我。 
预测未来的最好方法就是发明它。
The only limit to our realization of tomorrow is our doubts of today.