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A mathematician's work is never truly finished; there is always more to explore.

過去不過是一種幻覺，但它是一種必要的幻覺。

One solution fits all is not the way to go.All these cultures are different.The right culture for the Mayo Clinic is different from the right culture at a Hollywood movie studio.You can't run all these places with a cookie-cutter solution.

The energy sector is evolving, and so must we—adaptation is key to survival.

解釋：人有知識(shí)，猶如樹木有枝葉，樹木有了枝葉，能帶給人陰涼，人有了知識(shí)，就可以為人民做更多的事。