My stomach is a knot of sorrow and anger, but I keep smiling.

二十世纪的恐怖在于每个新事件的规模之大与其反响之微弱。

"Leadership is not about being in charge. It is about taking care of those in your charge."

Never underestimate the power of small, consistent actions to drive large-scale change.

通过使用蒸汽获得的最大动力也是任何其他方法可实现的最大动力。

Our modern skulls house a Stone Age mind.

没有比冷静更让人恼火的。

科学的美在于它让我们看到的不是世界的现状，而是它可能的样子。