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。 
The most important skill for a programmer is the ability to read code.
郦波在讲座中引用苏格拉底的话并加以阐释
You can't cross the sea merely by standing and staring at the water.