From time to time you may stumble， fall， you will for sure， count on this， no doubt， you will have questions and you will have doubts about your path. But I know this， if you’re willing to listen to， be guided by， that still small voice that is the G.P.S. within yourself， to find out what makes you come alive， you will be more than okay. You will be happy， you will be successful， and you will make a difference in the world.

The best way to ensure peace is to maintain a balance of power among the great powers.

The desire to get rich is a natural human instinct, and it's not something to be ashamed of.

真相很少是纯粹的，也从来不简单。

心理学家必须避免一切形而上的假设。

Innovation in oil extraction isn't optional—it's a necessity for sustainability.

复杂很容易，简单却很难。