"The world breaks everyone, and afterward, some are strong at the broken places."

The challenge in theoretical computer science is not just to solve problems, but to understand the nature of problem-solving itself.

对一切数据进行冗余备份，至少要有一个物理硬盘备份和一个云端备份。每个备份都要多于一个。想想要是你弄丢了所有数据、照片、笔记，得花多少钱来找回它们？与遗憾相比，备份很便宜。

If you're not failing, you're not pushing your limits, and if you're not pushing your limits, you're not maximizing your potential.