译文：假如让青春年华虚度，到年老时只能悔恨不已。赏析：人生短暂，年华易逝，我们要珍惜每天的日子，不要蹉跎岁月。

I'm not a politician, I'm an artist. And the artist's job is to be a mirror, not a leader.

The stories we love best do live in us forever.

One is the happiest thing is that somebody loves you.When you are at my time， I absent-minded，When I come to you， when you have gone.We are always in a meeting to miss， losing a lot of.However， I want to say this is because we are still young.No， perhaps this is our life.From then on， I always looked back the road.

The best way to learn econometrics is by doing—working with real data and real problems.