The difference between genius and stupidity is that genius has its limits.
天才和愚蠢之间的区别就是天才有它的限制。
当今世界面临的最重要挑战是在发展中国家建立强大、有效且负责任的国家。
Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.
No matter how complex or refined, all behavior is to be explained in terms of stimulus and response.
无论多么复杂或精细，所有行为都可以用刺激和反应来解释。
几何不仅仅是关于形状；它是关于理解我们生活的空间及其内部的关系。