The power of abstraction is that it allows us to reason about systems at a higher level, without getting bogged down in the details.

数学是理性的音乐。

I want to do what I like all day. I want to sit in a roadside cafe and look in the shop window. Walk in the rain and do something fun or even exciting.

我是那种会让你想扇你奶奶一巴掌的人。