Life is a journey, and love is what makes that journey worthwhile.
生活是一段旅程，而爱让这段旅程变得有价值。
Swim upstream. Go the other way. Ignore the conventional wisdom. If everybody else is doing it one way, there's a good chance you can find your niche by going in exactly the opposite direction.
The best way to document a program is to document it.
数学的本质在于其自由性。