Every mental state exists for a purpose; to understand it, we must ask what function it serves in the broader system of behavior.

做数学就是同时参与创造和发现的行为。

It is not a lack of love，but a lack of friendship that makes unhappy marriages.

音乐是连接所有灵魂的通用语言。

Where there is nothing, everything is possible. Where there is architecture, nothing (else) is possible.