失败只是通往成功的垫脚石。
Failure is just a stepping stone to success.
粮食富裕，人们就知道礼节；衣食丰足，人们就懂得荣辱。
The truth is a knife, and lies are the bandage.
The challenge in theoretical computer science is not just to solve problems, but to understand the nature of problem-solving itself.
Force and fraud are in war the two cardinal virtues.
【大意】太阳不知道黑夜的情况，月亮不了解白昼的景象，太阳与月亮都有光亮可以照明，却不能兼知黑夜与白昼的情景。
理论的任务不仅是了解自然是什么以及它是如何运作的，而且要尽可能接近理解为什么自然是这样的而不是其他样子的不可达到的目标。