The music is not in the notes, but in the silence between.
写作不是为了取悦别人,而是为了发现自己。
【释义】:和品德好的人相处,就像进入放满香草的屋子,久了也会染上香气;与恶人交往,如同走进卖臭鱼的店铺,久了也会变臭。  
The difference between correlation and causation is not just academic—it can have profound policy implications.