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Mathematics is the poetry of logical ideas.
No matter what he does, every person on earth plays a central role in the history of the world. And normally he doesn't know it.
年轻人不知道什么是谨慎,因此他们尝试不可能的事情——并且一代又一代地实现了它。
可持续的企业不仅对地球有益——对企业也有益。
If you don’t take risks, you’ll never know what you’re capable of.