The only person you should try to be better than is the person you were yesterday.
People are not lazy. They simply have impotent goals - that is, goals that do not inspire them.
Policy should be based on evidence, not ideology.
物理学的美不在于拥有所有答案，而在于提出更好的问题。
质量是工程的生命线，任何时候都不能放松对质量的追求。
最大的风险是不冒任何风险。在一个快速变化的世界里，唯一注定失败的策略就是不冒险。
每个人都有两次生命，第二次开始于他意识到自己只有一次生命的时候。