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Leadership means making tough decisions today that will pay off decades from now.

寫作是一種不被中斷的談話方式。

Those who can imagine anything,can create the impossible.

I don't have any particular recipe [for developing new proofs] ... It is the reason why doing research is challenging as well as attractive. It's like being lost in a jungle and trying to use all the knowledge that you can gather to come up with some new tricks, and with some luck you might find a way out.