我不想出名，我只想变得伟大。
I don’t want to be famous. I just want to be great.
You think when you wake up in the mornin yesterday don't count. But yesterday is all that does count.
Natural experiments are a powerful tool for understanding causal relationships in the real world.
Respect for the environment and respect for people go hand in hand.
无论如何都要忠于自己
过去总是紧张的，而未来是完美的。