计算机科学中真正的挑战不是编写程序,而是理解计算的本质。
The real challenge in computer science is not to write programs, but to understand the nature of computation.
人生最难的是知道该跨过哪座桥,又该烧掉哪座桥。
The truth is not always the best answer, but it is the only one that can set you free.