过去是一个异国他乡；他们在那里的行事方式不同。
The past is a foreign country; they do things differently there.
Don't be afraid of failure. Failure is the necessary path to success.
Make no mistake about it: Computers process numbers - not symbols. We measure our understanding (and control) by the extent to which we can arithmetize an activity.
一个“履行”的话语不是真或假，而是成功或失败。
真理不仅仅是逻辑或孤立事实的问题，而是情境的结构特征问题。
解决数学问题的喜悦是无与伦比的；这是纯粹的智力胜利的时刻。