优秀的团队不只是追随领导者，而是相信愿景。

释义：现实政治只承认实力，而非道德正义。

Innovation happens when you're willing to challenge the status quo and take calculated risks.

估计问题的性质不同。在这里，我们不关心检验特定的假设，而是关心估计参数的值。

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.