我学得越多，就越意识到自己不懂的还有很多。

过去是一个谜题，每一块都很重要。

What do we call visible light? We call it color. But the colors are only the names we give to the way light behaves when it hits something.

We are all bit-part actors in each other's lives.

我们建造了太多的墙，而没有建造足够的桥梁。