创建和维持大型复杂组织的能力是区分成功社会与不成功社会的关键因素之一。
The ability to create and sustain large, complex organizations is one of the key factors that distinguish successful societies from unsuccessful ones.
能源的未来在于发展与可持续性之间的平衡。
城市是一个伟大的人工制品，是人类文明的最高作品。
Every mathematical problem is a window into a new world of understanding.
我相信：个人自由的探索精神是世界上最宝贵的东西。我会为此而战：思想的自由，可以朝任何它希望的方向发展，不受指引。
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.