When speaking to an audience it’s better to fix your gaze on a few people than to “spray” your gaze across the room. Your eyes telegraph to others whether you really believe what you are saying.
一流的智力的考验是同时持有两种相反的观点，并且仍然保持运作的能力。
有些伤口永远不会愈合，只会转化。
要想改变世界需先改变他自己。
一幅图画是一个事实。
数学是提出正确问题然后找到答案的艺术。