善恶之间的界限常常模糊不清，我们需要自己去辨别。
The line between good and evil is often blurred, and it is up to us to navigate it.
The world is full of people who have never, since childhood, met an open doorway with an open mind.
Sustainability isn't a cost—it's an investment in resilience and long-term growth.
数学家是模式的创造者，就像画家或诗人一样。