Not for the sake of our health, though it's often presented that way, but because it's an escape from the human anthill. It's an escape from our own competition, and our own dramas. And that's why ween joy looking at glaciers and oceans, and contemplating the Earth from outside its perimeters, etc. We like to feel in contact with something that is non-human, and that is so deeply important to us.

The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.  

世界是一面镜子，反映出我们带给它的东西。

Great things never come from comfort zones.

The best way to learn mathematics is to do mathematics.

Architecture is the art of making the necessary beautiful.