You never fail until you stop trying.

解释：第一次击鼓能振作士兵们的勇气，第二次击鼓可以使士兵们的勇气低落，第三次击鼓士兵们的勇气就消失了。

The role of business is to produce products and services that make people's lives better—while using fewer resources—and to act lawfully and with integrity.

唯一真正的监狱是我们为自己建造的监狱。

市场保持非理性的时间可能比你保持偿付能力的时间更长。