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。 
Small actions, multiplied by millions, can transform the world.
The greatest single achievement of computer science is the development of the concept of the algorithm.
"I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross and concentrating."