Look at me.We all have marks on our face. I have this wrinkle here from your first surgery.I have these wrinkles here from your last surgery. This is the map that shows us where we’ve going.And this is the map that shows us where we’ve been.And it’s never ever ugly.

真正的智者，是知其然，也知其所以然。永远明白自己在做什么，要做什么！清醒，问心无愧，活得明明白白！

The difference between good and great is the attention to detail.

The power of abstraction is crucial in computer science, allowing us to focus on the essential aspects of a problem.

如果没有经历寒冷的冬天，就不知道松柏的坚韧挺拔；没有经历过危难的事情，就不知道君子志向的远大。