能量守恒定律不仅是一条经验法则，更是思维的必然要求。

The defining decade: Why your twenties matter—and how to make the most of them now.《The Defining Decade》

The challenge of leadership is to be strong, but not rude; be kind, but not weak; be bold, but not bully; be thoughtful, but not lazy; be humble, but not timid; be proud, but not arrogant; have humor, but without folly.

The future belongs to those who see possibilities before they become obvious.

挑战让生活有趣，而克服挑战让生活有意义。