"The only way to discover the limits of the possible is to go beyond them into the impossible."
发现可能性的极限的唯一方法就是超越它们进入不可能。
天下没有几百年不出现弊端的制度，也没有永远不变的法律。
Handy measure: the distance between your fingertips of your outstretched arms at shoulder level is your height.
帝国主义没有道德，没有伦理，没有原则。
The only reason people want to be masters of the future is to change the past.
The scientific study of behavior must be based on objective, measurable data.
物理学和数学之间的界限并不像人们想象的那么清晰。