关键是在事情顺利时不要太高调，在事情不顺时不要太低落。

In business, if you're not moving forward, you're falling behind.

"The past is not dead. It is not even past."

"Experience is simply the name we give our mistakes."

The only thing worse than training employees and losing them is not training them and keeping them.

To do mathematics is to engage in an act of discovery and conjecture, intuition and inspiration.