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Never be afraid to take risks. The biggest rewards often come from the biggest risks.

真相并不總是美麗的，美麗的言辭也不總是真相。

Good econometrics is like good carpentry—it's all about using the right tool for the job.

If you want to see what this nation is all about, you have to ride the rails. Look outside as you speed through, and you’ll find the true face of America.