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你永远不会太老去设定另一个目标或梦想一个新的梦想。
Investing in local communities isn't charity—it's smart business.
"The best stories are the ones that stay with you forever."
是因为他们行事合理,行事合理来自于受到的熏染得当。 
Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.