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Innovation requires courage, but even more persistence.

學習數學的最好方法就是去做數學。

"The past is never dead. It's not even past."

The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

Innovation is not an option; it's a necessity for the survival of the coal industry.

重點不是預測未來，而是為未來做好準備。