The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

在能源领域，合作是解决我们面临的复杂挑战的关键。

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

The great challenge of our time is to create a world order that is both just and sustainable.

时间存在的唯一理由是让一切不会同时发生。