So happiness is the most popular word we have heard through the past two years. Happiness is not only related to personal experiences and personal values, but also, it's about the environment.

当下不过是换了伪装的过去。

平静来自内心。不要向外寻求。

I have to be alone very often. I’d be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That’s how I refuel.

数学是模式的科学，而自然利用了每一种可能的模式。